So if it uses a compatible medium, it has to be backwards compatible?
I, uhh- What?
I didn't say it "has" to be. read my post again: I just said that it makes no sense to drop the functionality. And if they ARE going to drop the functionality, they might as well move to a better storage medium (with SD cards being more compact, less prone to damage like discs, and storage capacity in the hundreds of gb at least, they might as well go with some sort of game card, like for 3DS and PSV). Why are we still using discs for the 3rd generation (4th, if you include PS1) in a row?
EDIT: I'm not saying there aren't ADVANTAGES to discs (not losing them in couches, for example). I'm just saying that there must be a better storage medium available out there