From those list, Only Hotaru and Darrius to me, are the most worthy to make it into DLC. For I hate any new kharacters who is just a recycled old character with new look and name with re-used special moves. Part of the reason I don't like Ashrah(Kai's Falling Fireball, Raiden's Torpedo, well, in a way, Bigger version of Raiden's hat, Kung Lao's Spin), Kira(New look and name for a Kharacter who is nothing more than a fused Kano and Sonya? No way), Shujinko(An old guy with NOTHING but stolen moves of other fighters), and so and so.... I could go on and on. At least Hotaru, though he only had 2 special moves when he debuted, but they were pretty original. Even better when he got MORE unique special moves in MKA, I see a LOT of potential of him making back then so many so called 'NEW' Kharacters whom are not really new. Darrius as well, to me, one of the more original kharacter than the rest of the 'NEW' additions in MKD.
Call me arrogant, but that's what I think.