Yeah as amazing as the Switch has been (my #2 console of all time) I do kinda crave a new (quality) Starfox and DK, plus the wait for Prime 4 has been ridiculous.
I am also keen for the next Mario Kart; 8 is a terrific game, and the Booster Course Pass did a lot to keep it fresh, but I've been playing the core game since 2014, the next entry is way overdue.
Still, I shouldn't complain; the Switch has given me two of the best Zeldas, one of the best 3D Marios, one of the best 2D Marios, one of the best Metroid games, my pick for the best Kirby game, plus a bunch of other cool additions like Xenobade 2/3, Splatoon 2/3, Astral Chain, Bayonetta 3, and the best third party support for a Nintendo system since the SNES.
Even if it fades out without any more big new games, it's been a great system.