Cassilis
The same deal as above- big things for the Jedi. Unlike Spiridos, you have gone a bit beyond the surface here, so what do we now have?
The first purely diplomatic mission- always envisaged to be played through by Gundy- we have a very different situation here. Despite the presence of two armed forces- one quite large but untrained, one very large and deadly- the Jedi are in absolutely no imminent danger at all. Indeed, having being given control of the army, the Jedi are in fact unstoppably powerful, with only their sense and their conscience preventing abuse of it. Note- the Dark Siders never get chances like that. Nothing WOULD stop them. It is, of course, intentionally frustrating for the Jedi to be the most powerful people on the planet, yet unable to do anything helpful.
Of course, you can help, just the army is not much good to you- and for once, nor are your sabres. It's down to your interpersonal and diplomatic skills.
Meanwhile, you have a detailed social mix. Not surrounded by criminals and the scum of the Galaxy, nor by corporate lackeys and interstellar billionaires, this time you are in the company of cultured, sophisticated, educated people. Even the General is no pig-headed psycho, but a highly educated and deeply trained aristocratic officer. Yet horribly absurd things seem to be happening at the heart of the Republic- hostilities are on the brink of starting. It seems stupid. The people aren't stupid. So what the hell gives?
Ok, we have a big list of things to work on here. Let's get into it. First off- it is a diplomatic mission. Understand the people!
1. Kuylen. You've touched on his reasons but gone into no detail. Why is he here? He was asked to seems not quite enough- does he seem like the sort of person who does things just because asked? You will note that Kuylen is apparently running this planet, and not even the Venerable Z'Har fully controls him. Come to that, how did it get to the point where the Mercenary they ask for help ends up running the planet, leaving the elected leader watching nervously from the sidelines? So this man, eerily like his cousin, who naturally assumes planetary control... did he really come scurrying here at the behest of the Z'Har? No, he wants to be here. Why?
What kind of man is he? At first, it seemed that his determination for a military solution would make your mission impossible. But then it soon became apparent that it was Kuylen who was waiting for the solution that he hopes will get the Rebels to surrender without any loss of life or property damage- and it was the Venerable Z'Har who was asking Kuylen to mount a direct assault as soon as possible that could cause a slaughter and would almost certainly damage the Sanctuary, perhaps severely... simply because the Venerable Z'Har seems unable to wait for the artillery train to arrive. (Talking of which, where the bloody hell is it? What did Anaz do, leave it behind by mistake?). Then before you know it, Mr. General proves so loyal to the Republic that he defies the Z'Har and places absolute faith in you, the Jedi, when he could have started hostilities there and then if he wanted to.
Yet... he doesn't seem to like you, as such. Or the Jedi. You doubt he has met many before, It seems to be institutional. So what is going on there?
2. Skorzeny. This man is a gift- use him. An intellectual, friendly, committed man with virtually no willpower who wants everything to turn out right. He'll give you all the help he can. The whole story is totally unfair on him- he's caught in a situation he cannot handle. Yet he is head of state in this planet of geniuses- how did that occur, a situation where it was able to get this bad? Something clearly went terribly wrong, what was it?
And so how did he end up here? What does he want now? What is his agenda?
3. The Venerable Z'Har. The head of the Z'Har, the most respected oif the Z'Har, a man with no power but apparently infinite authority on Cassilis. Even the Government do everything he says. These people swear blind he is the most intelligent man on the planet, which must make him candidate for most intelligent in the Galaxy.
So why... just WHY... is this man of all people the most psychotic and unpleasant of all? Why does he hate you? Why did he try to keep you away? Why has he decided to solve a political issue on a pacifist world with an army?
4. Volun. You haven't met him yet- tricky. But from what you know, you can already start thinking about things. Here is the list:
a. Volun was armed right from the start, where the rest of the rebels were not.
b. He is a trader, with strong support from the farmers
c. He is very rich
d, He is, apparently, very stubborn.
You can start making some theories out of that.
Meanwhile, away from the people, onto the situation.
5. The Sanctuary. This is the big complicator., It's very simple to say "Avoid conflict at all costs." But that would be too simple. Proper diplomacy is never that simple. Saving the Sanctuary is vital. It's a stupendous landmark, like Big Ben or the White House or the Kremlin or even the Pyramids. It is worth fighting to protect- and you as Jedi are the kind of people that do that. If you prevaricate and delay so much that the Sanctuary gets torched by irate Rebels to prove their point, whilat all that time you had an army that could have saved it... it will be disaster, a disaster flashed across the Galaxy with your names at the top. Kuylen tells you you should strike now; you think there is too much unknown to do that. You are probably right- but so is he; the longer you wait, the greater the risk.
6. The issue. You kinda looked at this and then went away. I know it seems boring, but it is very Star Wars- taxes starting a dispute- and actually you can start getting useful iunformation from it very quickly. A tax dispute, you are told, now turning to armed conflict- echoes of Naboo, but far from the Feds this time. WHAT tax dispute? What is in dispute, exactly? And how did it get from taxes to the demand to abolish the Z'Har- a ludicrous demand, surely? And from there to aggression, and now war... what were the steps?
7. Negotiations. You must start these! Without them you will never hear the other side, never meet Volun, never have options to find the truth. You must find a proposal that both sides accept to re-start them. But if that seems too big a task, have a closer look at what that means. It has to be a proposal that both sides accept- NOT one that is 'fair' to both sides. You suggested saying to the Rebels you wanted to hear their demands with a view to maybe meeting them. I told you that Skorzeny would not accept proposing that., Which he won't, but then you tried to think of something that he would accept AND the Rebels would. No wonder you can't- if that were possible, negotiations would still be going. You need to do something that will bring the Rebels back to the table. But on the other side, you only have to coinvince Skorzeny to make a proposal. Don't treat him like an enemy- work with him. He can see a bigger picture if you give him a good one.
8. Jedi. A subtext here is the interrelation of ancient organisations- the Jedi, the Z'Har, the Boyar. Central to that is that these other organisations do not like the Jedi- you see evidence for that everywhere. What's the problem? They clearly can't have moral issue with you. They respect your authority. So... what's the deal?
And finally... although not directly relevant, you may want to think about the original Kuylen. He was always a man of mystery. For the first time ever, you have a chance to find out a bit about his background. As Rex commented, the circumstances about his birth are very tragic, when you look at it.
It's simply a chance to understand his motivations a bit better- and in observing Anaz, you get a distorted, but interesting viewpoint on the man Kuylen was.