Well, different strokes and all. A lot of folks want a superhero system to primarily deliver exciting battles. The melodrama of romantic relationships doesn't translate so well to RPG's IMO. I'd rather see the spirit of superhero combat really captured once and for all. Avengers Earth's Mighties Heroes, for instance, is a very entertaining cartoon and its focus is on summer-blockbuster-style action. Good show to take cues from.I've already heard kvetching to the effect of using Smallville's "soap opera" system for a superhero game. Which is weird to me, since in my experience at their best comics are very similar to soap operas. A game where Spiderman is rolling his "with great power comes great responsiblity" + "gotta hide my secret from Aunt May" vs. Wolverine's "I'm the best asy what I do" + "Gotta keep my mind offa Jean Grey", just inherently sounds awesome.
Though instead of 'values + relationships', something like 'values + melodramatic hook' might be appropriate.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.