All that and ...but wait there's more.
Regen integrated invisibly into the braking system. If the battery is full or missing, the disk brake takes the heat. No backpedal regen though.
This brings to mind the Arcimoto MLM (Mean Lean Machine). The company was brought down by stock market shenanigans, but they were developing a four-motor, three wheel drive tilting tricycle. That's a lot of motors. Two with regen hubs and one for the pedals seems adequate? The tilting part is replicable and important to avoid a wide front track.
I'd imagine an ellipsoid body with large front wheels and a small rear wheel on a variable wheelbase. It would stand upright to maneuver and for ingress/egress; and then lay back for less frontal area at speed.