This is a simple request that would open a lot of tone shaping possibilities, especially for tweakers that may currently own Fractal devices.
Simple tone control: essentially a low-pass filter with frequency and slope controls, but the slope must be configurable from 24db/oct all the way down to 3db/oct so it can be VERY subtle. The purpose is to simulate a guitar tone control that can be dialed in precisely for specific tones - think Eric Johnson.
Flexible drive: a drive block that’s highly tweakable, with selectable drive type (solid state fuzz, opamp, tube), and two stages preferably with individual configurations for each including tone controls - the tone control above as a pre/post for each stage would be incredible.
Give these a try, I think you will be pleasantly surprised with the results.