Instead of just adjusting 1 parameter through 1 knob, I'd really love to see a macro control replacing this feature. It's WAY too simplistic.
So for example:
Macro 1 controlling: Cutoff of Sylenth1, Resonance of Halion Sonic SE, Cutoff of Halion Sonic SE and FM amount of Massive.
I can't imagine that this is too hard to get in. If you can control 1 parameter, you can control several more. Ableton has had this for ages (and its the only thing I really prefer in ableton over Cubase to be honest), it's insanely easy to create automations this way, instead of having to automate each individual control by itself and timing them all together to get a perfect result.
I really think that Quick Controls is pointless in Cubase, I never use it and I won't ever do it. It's just too damn simplistic and oldfashion.
Macro controls please!