Uh. I hope you mean "the last hurrah of the strong male lead in Gundam.", because a lot of characters would like to have a word with you otherwise.
Gundam X and 08th MS team both have decent leads, but I take your point.
I guess I'm just getting nostalgic. I can see why the DL core hates the characters, because they don't stand up at all to overanalysis; frankly, they're not just immature but nonsensical as well. What I enjoy the pacing and
writ large-ness of GW. Not much introspection from the mains, and what is there is informative (mostly Zechs' frame of mind). As for pacing, things just take as long as they take, for instance Wu Fei's duel with Treize, which has long-lasting consequences but lasts about 30 seconds. As for why I like GW, it reminds me of other stories where characters do things for sweeping reasons of emotion and duty that are tenuous when you take the characters as rational actors, like the Odyssey and Aeneid.
By the way, Kev, which main characters do you have in mind when you say that? (I mean, obviously, you're right, there are plenty.) I hope you're not referring to Bleach or Naruto.
P.S. whatever you all think of Heero and Relena, I hope none of you will deny that they deserve each other.