There's no reason for Nintendo not to bring over their entire Wii U library to the Switch either as remasters, collections or straight up ports.
If I were Nintendo I'd put smaller teams (external and internal) on bringing as much content to the Switch as possible. Some of them could be timed to release before a sequel (Xenoblade before Xenoblade 2).
Examples:
Remasters
Hyrule Warriors
Xenoblade Chronicles X
Super Mario Maker
Collections
Pikmin 1-3
Zelda collection incl. Twilight Princess HD and Wind Waker HD
Xenoblade
Super Mario 3D World incl. Captain Toad
Bayonetta
Super Mario Bros U incl. Luigi DLC
eShop
The Wonderful 101
Project Zero: Maiden of Blackwater
Tokyo Mirage








