What would be the point of the boss then is the weren't obtrusive and powerful? Might as well not even put it in then.
They completely lose their purpose and removes a new game mechanic. Also just seeing them in the background would disappoint people and then you'd have people going. "I wish Ridley did more than just fire a laser beam everr so often."
I mean if you don't like it go Omega mode then.
I think that point just makes it clear that bosses are inherently a bad mechanic. You either make them obtrusive and annoying, swinging the center of gravity in terms of battle flow heavily towards thhe stage as opposed to the other players, or you don't, and you wonder why they bothered at all. The worst stages in Smash have always been the stages that felt like they were actively fighting your attempts to play on it, and stage bosses are a quite literal expression of that.
And the 'just go Omega Mode' is never not going to be ridiculous. I don't even want to go into the importance of platforms in terms of competitive play because it's been said again and again and again, but Omega Mode utterly homogenizes stage variety and kills any distinct personality in a stage besides a new 'theme'. It's just not fun to keep going back to Final Destination all the time. It's tiring. Imagine never getting to play anything but 3D Land if you liked the idea of scrolling stages.
That all said, I am more than fine with the WiiU stage roster. I'm still sad that Wily's Castle remains spoiled by Yellow Devil, but there's way more stage variety than the 3DS version (where we basically only had four stages) and I think even some of the more 'gimmicky' stages that wouldn't be acceptable in a competitive context still look pretty cool and much more fun to play on than most of the 3DS's (generally quite bad) stages. Kalos Pokemon League in particular looks awesome from pretty much any angle of play you look at. Jungle Hijinks looks fucking awesome, too. Still blows my mind.
And we get Melee Yoshi's Island back hnnnnnng
And as opposed as I am to stage bosses... I think I'm alright with Ridley. I doubt that I'll play on that stage much in general, but as much as people are saying 'Flying Man, but bigger', I think having to beat Ridley up in order to ally him with you fixes a lot of what was shit about Flying Man in Magicant. It's a better and more persistent award than the dumb Yellow Devil explosion, and Ridley doesn't completely deny three quarters of the stage like Yellow Devil does either.
Too bad Metal Face fucks Gaur Plain up, though. Those huge fuck-off claws basically covering half the stage in a swing, ugh.