It would be nice if the entries in the undo history docker could include the brush preset and/or tool used instead of just being "Freehand Brush Stroke". I paint a lot of stuff with fur and do hundreds of little strokes with different brushes. As a result I often undo strokes in batches via the undo history docker. Unfortunately since all entries are named the same it's hard to tell where I switched brushes and how far I have to go back. Also some additional info, like was the brush in erase mode, could be useful since at the moment everything is just "Freehand Brush Stroke".
Vote for the feature. And link to discussion https://krita-artists.org/t/exact-name-of-brush-presets-in-the-undo-history/4350/4