I cannot change the leslie speed for B3, because the ui for the controls is now blocked/requires to have license for V Collection
How did you do open the UI before? AFAIK you have allways needed to own full applications to open them inside AL, and it's the same now when in Assign mode. If you own the full applications, then you can also assign other controls to control the Leslie speed and other parameters.
Do you own B3? Do you own any VCs?
Also: I'm a VC6 owner. My old B3 preset including Deep Violet show up in AL4, but not to use for the new B3V2. But i'm a bit concerned that the old B3 not longer show up in ASC.