I'm about to head for bed, so don't expect immediate answers from me, but I've seen many people say that E3 is for certain where we'll see Ridley's fate, and am I the only one who's not 100% on board with that?
If we're going with the scenario that Ridley is playable the only time we're guaranteed newcomers is in the 1 hour Direct, and I'm certain Smash won't take too much of that Direct's time considering they've likely got a **** ton to announce. I'm personally expecting Smash to take max 10 minutes of that Direct, though I do predict we're likely only going to be left with a trailer with multiple confirmations and a notification of the invitational and the demos. In that time I consider Pac-Man, Mii and Snake to all be more likely announcements than Ridley too, since they're all big characters in their own rights while Ridley is technically just a regular first party character.
If we're going with the scenario that Ridley is a boss Sakurai has already carried the Ridley hype far beyond what's acceptable anyways, so why wouldn't he just ride with it all the way to the finish line? Pyrosphere isn't a necessity for neither the demos or the invitational after all.
Now don't get me wrong, I do think it's more likely than not we're going to find out what's up with Ridley there, but I'm not going to be surprised if we're left just as clueless after E3 as we currently are either, I just can't imagine Sakurai not riding the Ridley train all the way to the end station at this point, no matter the outcome.