With my iCue now being fully replaced by Signal RGB, it would be awesome if I could control fan speeds in a group.
For example, have my AIO Radiator fans be in one group with a different fan curve.
This would also allow people to set a specific fan curve to a group rather than going individually and picking each fan curve for each fan (at least in my case).
Not exactly a huge change to the system we have now as the fan curve system is already great enough, but I do feel like it could streamline the UI a tad bit.