Honestly hope they port titles that were held back in some way by the system, not just block busters. Pokken is a great choice, the Switch allowed them to smooth out some rough edges on presentation. Xenoblade Chronicles X, Tokyo Mirage Sessions #FE, Bayonetta 2, Wonderful 101, these all deserve a second shot.
Oh and a super ultra deluxe edition of Hyrule Warriors that gives us all content from both versions would be pretty dang sweet.