Sure, it's slower than Melee, random tripping is a pain, and the less I say about Brawl Meta Knight the better. But I still love this game more than Melee, if not for the new stuff it adds.
Out of all the Smash Bros. games, this one heavily incapsulates the "Nintendo history museum" vibe that the whole series gives off, what with the Chronicle and the playable demos of old games.