Personally, I prefer to have the stabilise brush settings as a dropdown below the the button to activate a stability mode as this consolidates the settings close to the canvas. Currently, for mirroring there is already such a dropdown.
Alternatively, considering the discussions on this forum about a UI overhaul that is closer to Blender (which I find visually more pleasing and convenient). There, the dropdowns consolidate all options (so the UI can remain minimal and you won’t need dockers for these settings). Additionally, in Blender, these menus can usually also be opened as a pop-up using a keyboard shortcut.
When drawing/ sketching precise curves it is very important to have the stability settings, try to sketch the curve and then try and change the settings until you manage to get the desired curve.
I doubt we’re going to do an UI overhaul how Blender did it. We still have Qt6 and changing the widgets framework to do, that will be enough work without even thinking of a new design. Better change things like that in small incremental changes, like all other UI improvements. UI overhaul just to change its look is pretty inefficient, tbh, that’s a year or more of work without that much of benefits.