Ya know... You guys seem to have a difficult time actually and clearly explaining why just seeing Ridley's shadow and an indecisive message wasn't enough to cement Ridley's role. I think MorbidAltruism was closest.
We ought to be careful about the "Boss Characters = Bowser,DDD,Ganondorf" argument. Brawl had plenty of "Boss Characters" that weren't playable. What we should focus on is whether or not Sakurai himself is switching between terms. Does he refer to Yellow Devil as a "Boss" and not a "Boss Character"? Has he ever used the latter term for other Bosses during the Brawl era?
Either way, all that really need be said to people ignoring the ambiguity of the Direct is that Sakurai never directly said Ridley's name, never said that Ridley was one of the Boss Characters, and never showed Ridley himself. Allusions are not confirmations or facts. He can very well be a boss hazard, but cases are not closed with allusions.
Oh, and Hotfeet444, you really need to keep your emotions in check. You really really do.