I don’t think Ultimate has much to it for me besides a big roster and a VS mode, and a VS mode is basically the bare minimum. The Classic Modes are alright, though World of Light just feels tedious, and a lot of what I remember from the last times for me, a lot of the actual gameplay was variations on just regular fighting. Which is fine, I guess, and probably had to happen to get “Everyone is Here” going.
This is probably why I’m pretty down on “Just do Ultimate Deluxe!” because that is going to have to be really “deluxe” for me to have much interest, but that is me personally. I’d be personally fine with losing generally less popular and more derivative characters (though I recognize that this is in the eye of the beholder), if it can be a tighter, more interesting game with more fun things to do, better online, all that. I feel like this is the unpopular opinion now, and a lot of people I see in this thread just want Smash to be Super Madden Brothers now.
However, my only real ideas to get around that would be 1. the live service model (“Everyone is Eventually Here Again!”) with a solid base roster and a lot of customization, like Duke of Dorks’s idea. But that has its own problems still. 2. My impossible “Nintendo VS Everyone Else” idea, which is a half-Nintendo, half-third parties roster, fine tune veterans while also still getting to include more hype-building newcomers. But I recognize there’s also something drastic about that, and maybe it should be considered its own thing, in a sense.
I’m also at a weird point where I find fan games and mods and other highly customizable platform fighters more fascinating, because the potential seems more limitless there, but it can also be hobbled a bit by ambition and creativity being outweighed by certain realities.