I have a kind of powerful dirt bike. People put “throttle cams” on them for this same reason. Usually you want small adjustments within the lower range of power. When you want the majority of power you usually want close to all of it.

Throttle cams are basically an off-center circle. At lower throttle you’re pulling a smaller circle and the throttle moves less. Then when the throttle is opened up you’re pulling a bigger circle.