Just some random thought I had completely unrelated to leaks/current speculation: Why haven't we got music DLC? I know that characters are the most exciting and important part of Smash Bros, but I'm always so excited to hear some kick*** remixes of some of my favorite video game music. It would also be a good way to add in content that was lacking *cough cough* Xenoblade X music *cough cough*.
Personally, I'd love to get new music from games like Fire Emblem Three Houses (no character please), Pokemon SwSh, Xenoblade 2 (Torna and the base game), Xenoblade X, ARMS, Shovel Knight, and so many more. I think it'd be a good way to add in extra stuff without being too taxing from a development standpoint. Kind of like how Mii Costumes are handled.
Would you guys buy music packs with remixes plus new songs if they were priced well enough?