For Smash 6, Should guest third parties be limited to one franchise or even one company each?
Each guest franchise should be restricted to only having a single fighter per series - No Echo Fighters, no second characters, etc. By limiting each guest series to only having 1 fighter, it encourages the inclusion of other unique franchises. For Capcom, this leaves room for a Monster Hunter or Devil May Cry character, instead of an additional Mega Man or Street Fighter character.
For Square Enix, this leaves room for a NieR character, instead of an additional Final Fantasy character.
That means all secondaries like Ken, Richter, Sephiroth are cut for something like Dante, Bomberman and 2B