Mon May 17, 2021 7:00 pm
This doesn't answer any of your questions (sorry), but regarding #1, I use a mouse with "DPI shift" feature where one can adjust the sensitivity (speed) of the mouse movement via buttons on the mouse. So normally I'd keep it fairly fast for typical navigation (across 4 screens), but for more precise work I can shift the speed down to various levels when needed (or up, for that matter, useful for something like the on-screen shuttle control). And of course it works in any application or desktop, and the software can let one customize the DPI levels per application as well.
Mine's a Logitech "gaming mouse" (G700s), not sure if anyone else makes ones with this feature, or if trackballs with this also exist. I know controllers are a very personal choice, so switching could be a big deal. In theory this could be a software (mouse driver/controller) feature as well, but I haven't seen that personally. Basically something like DR's "hold CTRL for more precision" feature but independent of the current application being used. I do use the typical "mouse acceleration" feature of the OS, but it's nowhere near as useful for precision as an actual step-down/up mechanism.
Cheers,
-Max