Not yet, but good ideas. The per channel editing I'll deffo be adding. Can set up any kind of custom file export like this no prob as well. Would be cool to also implement other interesting texture packing features for pipeline stuff in the future, maybe even image management pipeline scripting...

No timeline for now. I've got a mac now for development but not sure how long it will take just yet!

Not fully yet, I've got a build working but still need time to work on performance/tablet things

Thanks for the lovely comment! Yes there is, get it on kalapaint.app and let me know how you find it

Yep, there are two so far, a "Moving average" and "Pulled string" that work on brushes, lasso, lasso paint

I'll be working on a mac version at some point but i can't say when! hopefully before next year

for resources (brushes, textures), those are .zips that can be renamed and worked with, though the brush structures themselves are compressed and would need CLI tools too

yes for paintings - I wanted to handtune the compression & speed and there's quite a lot going on. but i hate lock-in too, so CLI tools for extracting from them are coming that will kept updated/distributed freely on the site