Would be great to see the ability to assign mod sources to the LFO speed as well as to the amount and position of all assigned parameters.
This would allow things like increasing LFO speed or modulation amount/position when turning the mod wheel, have slow LFOs modulate the speed of faster LFOs, increase modulation amount for MPE/Aftertouch, etc.
It would open up tons more sound design capabilities. I truly don’t think you have anything to lose by allowing more modulation ability.