I am a little bothered that a team that once pushed the hardware of the Wii and Wii U to astounding heights can't seem to get good results out of the Switch so far.
For me, the visual updates and QoL improvements are enough to bring me back to the game and justify a purchase, but I'd really like to see Monolithsoft stretch a little more in terms of visual fidelity. If they aren't going to at least target 900 or 1080p dynamically, lock the visuals at 720p - which is honestly a low bar to set for games designed specifically for the system. There are plenty of third-party ports from more powerful hardware that manage to maintain higher resolutions, and their own Xenoblade entry on the Wii U managed to do just that.
As far as portable mode is concerned, it seems that Monolithsoft is dismissive of it altogether. They have made UI improvements that allow the game to be more playable handheld than XCX was (that TINY font lol), but they seem unphased by the fact that they're turning out some of the most unpolished portable performances of any Switch titles... as a Nintendo 2nd party. Up until ARK came out, XC2 was generally considered to be the worst undocked optimization on the system.
These aren't gripes that will keep me from buying their products, but I'd be thrilled to see them take feedback and make improvements.
Retro Tech Select - My Youtube channel. Covers throwback consumer electronics with a focus on "vid'ya games."