The Switch has a lot of titles on it but what is it missing for its library to be perfect for you?

Metroid is already coming ,so I hope we get another Mario Sports title,Wario Ware,Star Fox, Rhythm Heaven.

Crash Bandicoot 4, Resident Evil 7, Fatal Frame 6, Mario Galaxy 3.

Kid Icarus Uprising HD or a sequel, Eternal darkness, Diablo II remaster, and take more risks on some ongoing franchise like 2D Mario, Kirby, Pokemon etc.
But i have to say it's library is already amazing, these would be miracles.

Many old SEGA IP revivals.

Mario galaxy 3 or any persona ports

New First Party Games (next iteration in these series)
Advance Wars
Punch Out
Excite Truck
Wii Sports Resort
2D Mario

First Party Remake/Remaster (basically the same game with updated graphics)
First 3 Zeldas
Mother 3
Every "new" 2D Mario in one collection

New Third Party Games
Octopath Traveler 2
Next Final Fantasy Tactics
Fantasy Life 2
Revive Shining Force
Valkyria Chronicles 5
Revive Golden Axe
Another D&D game from Dragon's Crown creator
Civilization Revolution 2
new Roller Coaster Tycoon made by original creator

Third Party Ports
Lost Odyssey
Final Fantasy 7 Remake
Dark Souls 2 & 3
Ultima Series collection (all remastered)
D&D Gold Box collection (all remastered)

I'd be so disappointed if they remastered Zelda 2 with no gameplay changes... with a proper remake, that game has a lot of potential. Anyway, neither one is happening, so whatever I guess.

Crash 4, Pikmin 4, Open world Action RPG Pokemon 1 gen, Pokemon party game and SSBU New story mode filled with epic cutscenes DLC.

Maybe they can actually make Kid Icarus Uprising playable on Switch. Other than that any 1st party game that was on WiiU should be on Switch

Golden Sun sequel/reboot
Super Mario RPG 2
Mario Galaxy 3
Metroid Prime 4
Clayfighter
An actually challenging Pokemon game
New Ogre Battle game
A lot of Snes ports