Super Mario Party 2 would be very welcome, assuming it has online. I sold my copy entirely because I couldn't play with distant mates.
2D Metroid has long been rumoured, assumed that Mercury Steam are working on a follow-up. Would be delightful to see this revealed, but I'd take a Samus Returns port too.
Pikmin 4 is like...vaporware at this point, and I just want to see it revealed. It's such a delightful series, and would be right at home on Switch.
Star Fox returning and not being hot shit would be nice too.
I mean, if all four of those land in a single Direct, that's a big deal.