MobyGames and AllGame.com should be your inspiration instead of Gamefaqs. If what you want to do is provide something unique and different, don't bother with user-submitted faqs. But if you want to do a game/publisher/developer/character database, give it your best shot. I'm not worried about the design because that can always change, however your goals most be defined first and foremost.
Aside from mentioning everything that MobyGames and AllGame.com already does, try to do some of the following:
-Provide a database of game artwork for a series when you search for a character/game
-Provide a track record for a producer, director, composer including what companies they've worked for, what games they've worked on, etc.
-Provide some old school gaming information similar to NeoZeedEater's threads on here.
-Like it was mentioned before, provide info on related stuff to a certain game: anime, movies, tv shows, toys
-Link to the best fansites for better in-depth info on the series that you can't provide, say if I were to look for Mega Man, I'd recommend visiting
Mandi Paugh's Mega Man Homepage