Ok, while there seems to be some ludicrous thought of Ridley being a stage hazard, let's just talk about why he'll suck as one, ok?
1. He moves slow, doesn't attack, and is smaller then his Brawl incarnation.
2. Everyone and their mama have seen Ridley as a boss. So nothing new.
3. Everyone, including detractors, will get pissed off with a gimmick on a stage that brings no diversity.
4. He's not playable.
If Ridley's not a playable character with the reasons above making him seem like a bad choice for a hazard, then that's all Sakurai's fault. For someone to say they want this Smash to be the best Smash, a boss gimmick given to Ridley seems to be spouting BS towards the fan base.
I can't say this about the people here, but I be damned to let anything, be it a leak, a article, or anyone on this planet that isn't Sakurai himself, tell me "Ridley ain't playable" and take that seriously.