I think the hardware has a lot of promise, but it's fair to say that at this very instant there aren't many exclusives to justify it if you aren't excited about Mario Kart.

If you have a backlog of Switch games, or you have favorites you're frequently playing on Switch, the improved processing power and loading times could be attractive, even if your games don't have resolution/framerate patches. For example, Hyrule Warriors: Definitive Edition loads battles in a snap, and doesn't have any framerate issues during gameplay anymore (although it is still capped at like 30 FPS in cutscenes, sadly.)

There's a couple other neat things about it, but likely not too relevant to anyone who's on the fence about the console.