'Um, yeah he did destroy the Sith "one bit". Unless killing the last Sith to come for a decade isn't anything. He took out the Sith reign as the Emperor. Had he not done that the Rebellion would've been crushed, thus the Galactic Empire - run by Sith - would be back in total domination.'
1. Palpatine came back, stronger than ever.
2.The sith with Lumiya also continued.
3. He didn't bring balance.
4. Oh, and preventing the rebellion from being crushed some how redeems his purging of the jedi?
'My Buddha. Sidious isn't the darkness (in this context). Asajj was out to kill Anakin. She is part of the darkness, hence a "foe". Just because Sidious wanted it to be so, doesn't mean he wasn't an enemy of any other Darksider.'
The point is, Assaj was a pawn and 'extension of [Dooku's] will'. Palpatine controlled Dooku, and thus basically controlled all of the dark jedi. Palpatine didn't view him as a foe, the fact that one of his lackeys did means jack.
'Okay? What does any of this have to do with the fact he was still an enemy of other Darkside beings? Is Sidious the only "darkness"? Obviously not in that context. He was, at a time, an enemy. There's really nothing more to it.'
The point is, he was more of an ally (potentially) to the darkness than a foe on a relative scale. Just because he may have briefly been a foe to a few minor darksiders, he was a potential ally to the epitome of darkness and he was going to purge the jedi and bring the sith into a golden age. Palpatine basically = darkness. He had plans for Anakin, Anakin was his last hope you could say. I say he's more of an ally to the darkness than a foe when you balance everything out.
'And even if he caused more destruction to the Jedi than the Sith, how does that change the fact - at one time - he was, indeed, an enemy? It doesn't. If I join the U.S. Army for two months and kill Buddha knows who, and then become a traitor and join the opposition later - I was still an enemy at one point in time. Especially if a member of the opposition tried to murder me.'
Please, that would be like including Exar Kun in that list.
The point is, Palpatine - the epitome of darkness and the sith that controlled pretty much every dark jedi that appeared in the clone wars viewed his as a potential ally and had plans for him. Even fighting dark jedi such as Assaj Ventress was bringing him closer to what Palpatine had planned for him. He was hardly an enemy to the darkness even as a jedi and was potentially the darkness' greatest weapon. You see, the difference between your analogy and this is that Palpatine already had plans for Anakin and viewed him as an ally before Anakin joined him.
'Yes, because Luke alone stopped Sidious' Force storm, right?'
I was speaking in terms of Luke and Vader, of course Luke had help from others.