No more clones please.
Clones are the real offenders here, with movesets that are hardly original. While this does lead to an easier time balancing, they are generally frowned upon by the audience for being lazy entries in the roster, despite the characters themselves generally being popular. There are frequent suggestions by the fanbase to make completely original movesets. This, I am not a fan of. I simply want some further luigification to occur.
“WTF is luigification?” Allow me to explain. In the origins of Mario, Luigi was a simple palette swap. A clone, if you will. Throughout its series, Luigi has become his own separate and (in most cases) a unique character, Smash Bros. included. Where he was an undisputed clone Super Smash Bros, he was refurbished for Melee, gaining numerous unique moves, distancing him as a character from Mario. In Brawl, Luigi gained further differences from Mario, and even calling him a semi-clone is disputable.
This luigification process happened to several characters between Melee and Brawl. Dr. Mario, Falco, Pichu, Ganondorf, Young Link and Roy were each clones of another character in Melee. They are each carbon copies of the originals. I mean even the freaking roster menu blatantly shows who clones are. They're all placed right next to the originals. (see spoiler tag)
Anyway, there was a popular rumour before Brawl that it would contain no clones. This would mean all the aforementioned characters would be removed or redesigned. Despite being unbelieved at first, it turned out to have notable truth to it. Dr. Mario, Pichu and Roy were dropped entirely, Young Link was replaced by Toon Link, and Falco and Ganondorf (the more important, popular and staple characters) were redesigned.
For example, in Brawl, Ganondorf gained new tilts, changed several animations and got a different special move. Falco has new aerial attacks and uses his reflector differently. Toon and Young Link who, simply for the sake of comparison, I will refer to as the same character, changed some throws and aerials among other things.The trend of luigified characters should continue by redesigning Falco, Ganondorf, Toon/Young Link plus (to a lesser extent) Lucas, Wolf and Luigi. These means more unique final smashes, tilts, smashes, aerials, special moves, etc in cases where they aren't already different.