Well, as I mentioned before. Recapturing the level of nostalgia will be hard. To some fans out there, it didn't even matter if the movie was good. Just the fact that Optimus was on the big screen was enough. Now that the TF's are old news, and we all know what they look like, the next film will have to hold our attention. It'll have to be 'good'. As for that level of nostalgia I keep bringing up, well they can probably still have it linger around by introducing fan-favorite characters like Ultra Magnus and Galvatron.
Besides it looks like Megatron's cannon did make an appearance in the form of that massive extendable-taxi-driver-sprung-loaded type thing he shoots Prime through that building with. It just didn't sound like his old fusion cannon though.... Sounded really light and unthreatening.
I'm sure the masses of X-Men fans were all pissed with the X-Men flicks, however let's try to not stray from the topic at hand.
lot's of people were fairy against Megatron's movie look. I for one thought they could've done alot worse. I mean, I can understand realistically speaking, a gun wouldn't fit the overall grasp of the film, but a Cybertronian jet/plane was enough. Although a mass weapons control center would've been nice similar to Galvatron which was nothing more then a massive cannon, they had to give him a way to get around. So overall, it didn't matter to me much of the decisions they made for the film.
Although Im not hardcore on X-Men, I wouldn't have been bothered by the lack of spandex.
....But yeah, I'd be bothered about a woefully physically lacking Vinnie Jones as Juggernaut in '3' (no dissing Vinnie there, but as that Juggernaut?) and if they had changed Xavier to being a cgi rendered donkey quipping wisdom-bites in the style of a second rate Oprah, then yes. I'd be pissed.
But overall I think that, for what I know of them, I'd have respected the changes in X-men.
Incidentally, on an even more trivial note, My uncle was a long term reader and fan. He is of a discriminating nature when it comes to quality of comic book movies. And he loved the movies.