Ableton have had this type of functionality in Live for a very long time. You can create your own per-channel controls and map them to multiple parameters across multiple plugins/controls on the same channel. You can then of course automate that control. Not only that, you can tweak the range of each parameter you’re mapping to (eg. you might want to map to the delay time param on 2 separate delays, but double the upper threshold on the second one so when you tweak your control, the delay time on the second unit is always double the delay time on the first). It’s why I have Live; I find it more flexible for sound design, particularly when working with synthesis.
If Nuendo had this, I would be a very happy camper.