I don't usually like platfighters having the FD equivalent be spooky/epic, both for being derivative of Smash and being reflective of the layouts diegetic use in Smash and not its functional use in competitive Smash, BUT it makes perfect sense for London in Royalty F4A, since that's a strictly casual game and FD is the "epic final stage" in most casual play sessions. Watched the Heat Wave stream and it does look really fun for casual play, absolutely loved the two Dorothies ganging up on Lancelot, which is the exact type of shenanigans a game like this would need. Light-mid-strong attacks sounds interesting too. 100 Acre Wood looks like a hilarious stage particularly, it's just Rooftop Rumble, but the platform is astronomically high, which strikes me as something that is deceptively wacky, not unlike the Ascend Zone in Slap.