Pen Tool for making curves
A simple pen tool for making curved lines that can have thickness adjustment. this would be instead of using a ton of warp nodes
Should also be possible to convert curves into brush strokes. Meaning a brush (all of its settings can be edited non-destructively) automatically traces the curve. (And updates with it of course)
Should be possible to convert (pen drawn) curves to masks in a non-destructive way. Meaning, when the pen points are moved, the mask updates.