I would also like this:
Let me first thank the whole team for their work/software.
I edit a lot of images I retouch them with the 'Inpainting brush tool', I create a new layer to edit on,
and everytime I select the Inpainting brush tool I need to select 'Current layer & below'.
When I close the file, and I open the next new image, I create the new layer above it, select the inpainting brush tool, I start to paint and then I realise, it's not doing anything because 'Current layer only' is selected, so I need to reselect 'Current layer & below'.
It would be nice to select save tools/remember settings in the settings panel.