It's funny how after Richter, I'd totally take Echo Fighters of Trevor, Julius, Leon and Juste. Jonathan and Nathan would be nice too, but those ones have potential for some different moves, although they do use the same items like their Belmont relatives. At the very least, give them their own Final Smashes compared to the others, like Jonathan summoning Charlotte for a Dual Attack Final Smash and Nathan summoning Thunderbird for his Final Smash. Jonathan with new idle, walking, running, etc animations reflecting his PoR Sprite would also be nice too.