I have been using the mod matrix to send %1 constant to OSC pitch and controlling that with ENV 3/4
Slot - 1
Source - Envelope 3
Destination - Slot-2 Amount 1
Then
Slot - 2
Source - 1% constant
Destination - OSC 1 pitch
With this setup you can recreate the sound of real world plucked string instruments etc
Eg a sharp decay will sound like a harp
Now if you increase the decay it sounds like plucking harder.
Mapping ENV 3/4 to velocity in the fixed velocity page would free up the mod matrix a fair bit.
Even having one of the envelopes able to rout to pitch via 1% constant as a dedicated pitch envelope would make the Virus TI sonically far more expressive without all these long routing chains.