Krita does support pinch-to-zoom and it can distinguish between your stylus and your finger, which admittedly puts it above most other Linux drawing apps. But it does not (as far as I can find anywhere) support touch rotation. This makes it suboptimal for most tablets, especially mounted ones.

Driver support is great, but driver support is not the problem for any Linux touch interface, that's been a solved issue for some time - the applications need to catch up to the usability level of stuff like Clip Studio. I fully expect that it will happen some day, but probably not for a while.

That being said, thanks for the suggestion, I really appreciate it. I'm still running Linux on my drawing tablet, I'm just putting up with everything that comes with it. If you had managed to find an app that had slipped past me when I was testing all of this stuff, you would have just made my tablet experience way better.

You're right on driver support vs application support. There also aren't a lot of new applications in this space. I've been looking for a note taking/diagramming app with both stylus and touch support that will function as "a better piece of paper" in terms of being able to rotate and zoom on an infinite canvas; put down variable lines, grids, and dot grids; easily select and move or resize content; and I've been pretty disappointed by the offerings.

I think the use case is a little esoteric in our community, I've been seriously thinking about trying my hand at creating an application to address my needs when I get some downtime from my contract work.