I tested the regen braking on my road trip yesterday. The "standard" setting is more gradual, but the peak regen value of 60kW is the same, it just takes a little longer to get there when I suddenly release the accelerator pedal. The effect is more comfortable IMHO. The "low" setting seems to cap at a peak regen of 30kW (i.e., half of the standard peak value), and also takes a little more time to get to it's peak regen value. The accelerator response is noticeably smoother too.
I hope for 2 things:
1) liner notes on these releases that give us more details on what "minor" tweaks have been done - the ones that don't affect the UI or merit marketing attention! I remember back in the day, perhaps early 2013, they actually included "improved accelerator response" in release notes. That's the last time I recall documentation of a technical change with no UI evidence in the release notes. Since then, we are left guessing: "did they, didn't they?" My guess is they did not, but who knows, maybe they did?
2) more regen selection options. I'd personally like a "sport" mode with very aggressive regen. I'm talking ability to brake late into a corner using the regen. And ability to get to full stop with regen. I would enjoy that.