I appreciate the thoughts about turning off the regeneration mode. We live in a pretty hilly area, half the time you are going up or down a hill. In the old days (I know, I'm old) cars had what is called compression braking, that worked pretty good keeping the car at the right speed with little or no braking going down hill. That was one of my complaints with our 2011 Leaf, the regeneration was not enough to keep the car from overspeeding on a down hill, so the brakes had to be used.
I understand the idea of slowing down before reaching the downhill portion of the road, but in the real world, you cannot slow down enough to make that great of a difference (at least not around here on two lane roads, traffic behind you will get annoyed!). Maybe on freeways it is possible, with the four (or more) lanes. I love the regeneration on our new-ish 2019 SL Plus. That's why we got the big battery, so we don't have to worry about squeezing every mile from a KWH.
2019 Leaf SL Plus, Scarlet Ember Tintcoat, picked up on 30 September 2019
JuiceBox Pro 40 Amp EVSE Charger
2011 Red Leaf, bought new in 12/2011, sold 5/28/19, 67,XXX miles, 10 of 12 battery bars
Blink L2 Charger (replaced)