I consider this an off-chance, but something I recently discovered leads me to believe a boss Ridley and playable Ridley is actually plausible.
No, I'm still not convinced that the Pyrosphere Ridley is anything but a boss, so don't bother trying to preach that crap.
Anyways, do you remember the Subspace Emissary?
Well, you know Ridley was featured in both his organic state and in his Prime 1 Meta Ridley state after his first defeat, right?
Now, think about when Tabuu revived the previous bosses to guard the Great Maze. Tabuu revived Ridley
and Meta Ridley
as separate beings.
Granted, SSE isn't really "canon" and is not likely to be referenced much outside of some enemies in Smash Run, but think about the important aspect here:
There are two Ridleys in co-existence within Smash. One organic, one cyborg.
Another thing I'd like to point out is Dark Samus.
Dark Samus is in her Prime 3 appearance. This shows that content from Metroid isn't strictly Other M (though Mother Brain being Zero Mission styled already did that), but more importantly, that Prime 3, which came after Brawl in Japan and had no content, is being recognized.
You know who was in Prime 3?
Meta Ridley.
So what I think is a possibility (not a strong one, but plausible) is that we could get the organic Ridley in his Other M appearance as the Pyrosphere boss, and Meta Ridley in his Prime 3 appearance as a playable character.
Now, some of you may say "But Prime 3's Meta Ridley is actually pretty damn huge!".
Here's where I get to what I recently discovered.
This is beta footage for Prime 3. Originally, there was no Omega Ridley; Samus would fight Meta Ridley again (and apparently in the Varia Suit).
Though, if you see what I see,
Ridley is quite small. On all fours, he appears to be shorter than Samus here! (not counting wings)
And the movements? Slow. Didn't Sakurai say Ridley "might have to be a little slow"?
Ok, yeah, the clip is running at a slow framerate, but his walking doesn't exactly scream "go in for quick kill".
You know what it makes me think of?
A ****in' alligator creeping up menacingly.
But that's beside the point.
Anywho, that's the off-chance I now believe in. Whether it's the outcome you guys would want is up to you, but I'm pretty sure with how
loved Other M Ridley is among the fans, you'd much prefer it being the case.