WarioWare is kinda likely, there's been talks about that before.
Pokemon Sw/Sh, I mean, that's not hard to guess, we're kinda due some new news for it ig.
Super mario 3d world, again, not hard to guess honestly considering the announcement.
Kirby, eh. Guess there's been not really anything kirby in a while.
Dragon quest, same tbh + there's been a bit of recent stuff around it in the Japanese sphere. (Dec 14th is a monday though, not the best day to release a game + it's reaching a bit too close to christmas)
Fall guys, considering the anti-cheat update and big yeetus and the servers are more stable, I wouldn't be suprised that it comes out by the end of this year but I'm not sure about after the direct. Season 2 starts on october 6th, if they do crossplay etc then I'd presume they'd want to match it up. Still think it seems a bit soon though honestly, + I would be suprised if they releases it on more platforms while it's as overpriced as it is rn.
Gameboy games I'm not sold on either, unless nintendo realised that NSO needs some more value to it, it wouldn't be hard for them to shove another emulator onto the switch, they seem to be comfortable doing that, but eh.
GTA 3 is a confusing one. I don't see any reason for this to happen at all? They've been all for re-releasing V for many years now, all the older games are dead already. GTAV could be ported to switch but I don't really see why it would be tbh, it's not the main demographic for the game and it kinda sucks tbh.
P5:S eh, not a bad guess. There was a closed demo for the switch version at the start of this year, taking in account for delays and messes (the demo was pretty bad), then early next year isn't a bad shout.
SSBU, idk much about this game but pretty sure I've not heard about a new fighter in a good while so would make sense for some new news about that in time for christmas time.
SM3d All stars ahhahahaha, I would be very very very suprised if they start bringing out DLCs for a game they're going to kill early next year. + There wasn't any Galaxy 2 code found in the emulator port. There was other stuff found, but it was more then likely just lazy removing of things. I feel like as well something like this would have been hinted when the game was originally announced, to push sales more.
Breath of evil, eh. Probably not. Unless it's literally just like "here's links face, here's zeldas face, both you've already seen before aaaand name" and that's it.
Idk. Most of this seems to just be good educated guesses based on already confirmed/public knowledge. Some weird days to pick for releases, too many far too close to christmas for example. Like, Dec 18 for all stars DLC? Do you want christmas sales?