Kotastic on 30 July 2015
Those "Instead we get" characters are A LOT easier to make than a completely unique character like K. Rool.
Lucina and Dark Pit were added literally last minute just as fanservice as the team had extra time. Lucas and Roy were mostly ported from their respective past games (with Roy having a bit of a different moveset to boot, but not that much), meaning less effort was put into them as opposed to an entirely new character.
Besides, why should K. Rool be in the game when other, more iconic characters like Slippy, Tails, Micaiah (that is if people don't mind too much fire emblem reps), Kamek, Dixie, Zero, and loads others should be in the game?
