Says you. Dissonance isn't inherently bad or good, it depends on the use. And considering I have no idea how you're imagining the stage itself, I can't see why you're fussing over how it might be arranged.
I guess "good" and "bad" here are generally going to be subjective, but for the most part people usually complain about the songs that don't generally fit into a stage, though there's a greater amount of complaining about songs that aren't really meant to be fought to, even if they do fit the image of the stage. (Ai no Uta for example gets a lot of slack)
As far as images go for Wily's Castle, I'm just working off the general idea of a somewhat (though not overly) dark factory with lots of mechanical doo-hickies in the background, with some enemies popping in here and there. The general colors would probably be silver and dark blue I would imagine. Possibly there could be a window of the outside which would be a dark and stormy sky.
"Best" is pretty subjective in Mega Man music. Every setlist I've seen has been wildly different aside from Wily's Castle from 2 and Protoman's full theme, and that's just for the classic series.
I guess it is, but there are generally enough popular songs that I would think that the pottential tracklist wouldn't have some generic tune that no one liked.
Also, I'm sort of surprised about that thing about the setlists you've seen. While I would think that Protoman's theme would be something that you'd see often enough, I'm sort of surprised you would see it as much as Wily's Castle 1 (or is it 2-1? 1-2? Bleh, there's really no good way of labeling that song.)
Few things:
1. Enemies don't have to necessarily be a specific size to prevent being knocked around. Remember Melee's enemies? Metal Primids? Who says Bald Bull or someone couldn't fight like that? And even then, what's the problem with being knocked around again (aside from Brawl's enemies having the universal weakness to juggling)?
2. How many games out there have enemies that play just like a regular character, but are stronger and unplayable? Oh yeah, every fighting game ever, including Smash (even if those were just variations on existing characters). Nothing says they can't do this for other characters, even though I'd prefer they didn't.
3. If bigger sizes were required, what'd be the problem with upscaling boxers again? Tell me you're not gonna give me the "we need to maintain canon sizes/ratios" bit, especially when opponents that dwarf the player is a Punch-Out requirement anyway.
1. Melee's enemies were knocked around technically. Metal enemies are a different matter, and sort of fall under the whole Giga-thing. Its established that metal characters are hard to knock around. Anyways, the problem with being knocked around for a established character like that, especially if they are a boss with several different moves, is that with that sort of effort put into them, then there's little point in not just making them playable. If you have a Bald Bull that's only around the height of Ganondorf, has several moves, and can get knocked around like a normal Smash character, what exactly is holding that character back from being playable? I guess there is the excuse of being lazy, but when all that effort is put into it already, it seems like a easy thing to do.
2. I wouldn't say every fighter, unless you're talking about supped up final bosses. In that case, I think we can easily agree that Bald Bull wouldn't be a final boss.
3. As someone who supports Ridley as a playable character, I don't have a real problem with tweaking the sizes to a degree. That being said though, doing so to Bald Bull, or most of the other PO boxers would probably not be a smart move. Little Mac is smaller than every other fighter, but he's tall enough that they can generally box him in a convincing manner without needing to lean over him or something. If you make Bald Bull the size of Petey Piranha, then the guy will be bending down or leaning over to dish out a good deal of attacks, and from the standard Smash perspective, that would just look silly. Think of him trying to jab Pikachu at that height.
If the story was about Little Mac making a comeback then why would he have a 0-0-0 record. In real world boxing even when a person retires and comes back they still retain their old records.
If your basing the idea on new characters then I guess you believe that Starfox 64 isn't a remake. The original starfox didn't have levels like Solar and Fichina. Don't get me started on the added mechanics.
In the real world, a boxer isn't allowed to assault the reff, and then use a boxing glove tied to a rope in the middle of a match. In the real world, someone with Glass Joe's record couldn't challenge the champ.
And SF64 isn't a remake either. Its a reboot. It restarts the story, but its not the same game. There's a difference here.