I would think the problem with actual downloadable content is if you want to fight someone with that character who hasn't downloaded that character. When the character is on the disk and just locked, then its available to see and fight at least. With alternate costumes or clone characters, you can just use the default layout for the original character on the other person's side and it won't change much for them. Otherwise they'd have to set up some sort of lock-out system on match set-ups. And since you probably pick your fighters after you've been set up against someone, that's gonna be pain. So I think disk locked content is the lesser evil in this case. But in general, I don't agree with it myself. DLC just seems like it'd be a hard boat to float with fighting games