The Troy movie did toy with the idea that the Greeks are the bad guys, actually.
Yes, and it’s common in most film versions of the Iliad because, after all, the Greeks are invading and Hector is heroic. In the Wolfgang Petersen version, Agamemnon is very clear there to conquer and add to his power; Priam is a much nobler (if less effectual) ruler, as Achilles notes.
Eric Bana plays Hector as the only sane man around, it’s very hard not to feel sorry for him.
“You did what, Paris? WTF?”
“Great, now I have to kill this guy because you can’t fight your way out of a paper bag, don’t think I’ve forgotten that this entire war is your damn fault.”
“Oh, the Gods are going to save Troy, are they, dad? I’ll just take the year off then, shall I?”
“Is there any way we could talk about this, Achilles? No? Never mind, I’m clearly f*cked and it’s Paris’ fault, as usual.”