Turbo Adjustments

I'm using the turbo feature to give me smooth acceleration on vehicles in Scrap Mechanic which currently only supports WASD style movement. For the record, the movement can be ever so slightly jittery even at the high end of Gradient setting, but other than that it works brilliantly... Mostly

What I'd like is the ability to set turbo input to as much as 100/s or 0.01 intervals which I believe would solve all jitteriness at the high end. In the mid range it will still be jittery, but there's not much helping that for animation issues.

What I'd also like is more in depth control of the gradient. For my purposes, the bottom end is slightly too low and the middle doesn't seem to have a smooth transition. I don't know how exactly you program that, but Qjoy gave the ability to input custom equations for joystick. Maybe there's a simple way to add a feature like that? Even just more gradients, say one that looks more like the Power Function would be nice.

If we wanted to get really crazy it would be could to do something like a graphically adjustable line function, like a bezier curve, but... well I figure that's a bit much of an ask.

In general, amazing job. This program was EXACTLY what I needed for controller setup and the onscreen keyboard is the perfect way to deal with inputs... can it do non-Qwerty?