Problem: There are seven selection tools in krita. Tablets have a very limited number of keys and even on a full keyboard that's a lot of hotkeys to memorize and jump between during painting.

Solution: It would be super usefull to have one key that just toggles between those tools when you press it multiple times. 

It should probably always start with the same tool, which I'd guess for most painters (since krita is targeted mostly to them) is the outline selection.

Alternatively adding a more general solution could be a great improvement in available tools for tablet users and a neat feature overall. This option would allow assigning multiple chosen tools to a single hotkey that would toggle between them. 

I guess it might be possible to make a plugin for that, but at my 0 level in coding this seems way too hard.