I have not had the pleasure of the Shimano 8000 motors either but my guess is the Shimano performs at the top of its class in that regard ,since it is used on so many high end mountain bikes such as the Norco Sight.Remember the first thing I said after riding your bike? I said it felt like a lot of power. You told me it was the lower power version.
I've ridden a lot of ebikes in the last 7 years. Generally speaking cadence sensing bikes perform the way you suggest. Those can be somewhat refined with good programming. It also doesn't apply power off the line and that's where people feel the need for instant power of a throttle. A good hub drive bike with torque sensor feels as good and natural as any mid drive bike I've ridden. A Stromer with TMM4 torque sensor is smooth as glass. It is more powerful than the average ebike, mid or hub. Yamaha mid drives feel more natural than Bosch or Brose to me. My BH with 350 watt Dapu with TMM4 torque sensor feels very natural. See some of the Orbea ebikes very similar system. The only major, quality system I've never ridden is Shimano.
My BH assist levels are 0%, 30%, 50%, 70% and 100% of available power. Assist is applied in every setting from ~4 mph through and just past max class 1 speed. The amount of assist is up to the rider. Speed is not predefined.