Persona 4 and 5 - they'd both clearly run on Switch and 3DS has had Persona spin-offs and several SMT games, plus SMT 5 is Switch exclusive.

Soul Calibur 6 - it's Unreal 4 so with optimisation and graphical downgrades could work on Switch.

Okami HD/Devil May Cry HD Collection - there's no reason why these couldn't be on Switch, unless Capcom are put off by cartridge prices.

Vanquish - I think it's a criminally under-rated game and would love to have it and a sequel on Switch.