If this can be solved on the rust layer, it will be better/faster. The second option is to hack a touch sensitivity solution on notedeck itself. The Google dev path is something you can start for "future generations" but don't expect anything back in time to matter.

Case in point, there was a bug on AOSP's default keyboard that I had to reverse engineer the keyboard to understand how character pixel rounding was working differently than other keyboards. The "bug" (unspecified API) has been there for over 10 years now.