well, can't say I didn't expect this. It's a shame, but to be honest we had so little to go on. Much of the speculation was based on almost zero 'proof'. I found myself getting swept up in the madness and very quickly losing rationality, and had to bring myself back to lucidity on a few occasions. I guess we read too much into it.
A few weeks ago I started to think more realistically, that Ridley would be too good to be true. Made me realise we already have one corker of a roster, and even if he's not playable, we do at least appear to have him appearing in Pyrosphere. Even if he doesn't make good playable material, he's still here, more prominent that ever, and for that I'm happy enough.
And as for clones, the roster cannot possibly be chosen in such a silly method of choosing a wild number and piecing together characters until said number is fulfilled. This isn't the X Factor. Characters are selected according to whether they work as a playable character, and clones are given separate slots if they alter the balance. They could have simply cut the good Doctor, Lucina and Dark Pit, and that would give no more reason to add anyone else. Ridley simply couldn't have worked well enough to make it.
So yeah, DLC is possible, but I hope we've all learned about excessive baseless speculation and optimism without reason. It's been an awful lot of fun, guys, and nice to finally know. See you in game!