>>the dynamics like that are abstracted away in EVs (i.e. dumbed down) or buried in menus and not readily accessible.

Exactly, they already do regen first, then mechanical braking, and just hide all the details.

I would like to see those details available so I can tune them (it'd be ok if they put safety limits on where they know the capabilities of the batteries, electronics, etc. far better than I ever could). Just a nice to have...