Sounds like a good solution. Or maybe you can also integrate an additional “Zoom mode” option into the “Two point tap” section of the Gestures menu; “Zoom mode” and “Mouse button control” excluding eacht other, and “Keep mouse button down” will only have an effect if Mouse button control is active.
Fig. 1a:
✅ Enabled
⬛ Zoom mode
✅ Mouse button control
✅ Keep the mouse button down
Fig. 1b:
✅ Enabled
⬛ Zoom mode
✅ Mouse button control
⬛ Keep the mouse button down
—
Fig. 2:
✅ Enabled
✅ Zoom mode
⬛ Mouse button control
⬛ Keep the mouse button down