Would you consider making some of these additions optional? I really just want the ‘Outside: box select, Inside:Paint Select’ behaviour, not the double-click or having the Alt-key select through…
Another thing I’d like to see as an option in the topbar: having Gizmos and Overlays turned off when rotating/panning the viewport.
But then, I understand you probably made this mostly for yourself, so if you’re not interested that’s okay!
There’s also an addon that adds an alternative to Paint Selection, but which doesn’t have an active tool: Ray Cast Selection
Maybe you could offer that method as an alternative?