Then why didn't you just say "You can only load 16 instances of Vienna Instruments in V-Stack's 16 slots, and I think that's a problem" in the first place? Instead you asked about MIDI channels, so that's where the discussion went.
Had you used language that expresses what you're trying to communicate and not something different, the people here who are only trying to help [:)] would have answered Yes, that is a limitation of V-Stack, and there are other hosts that have more slots.
However, we don't know whether the percussion player will in fact require lots of instances to cover all the different instruments. Therefore running out of slots may not be an issue. If it is, the answer is not to use V-Stack.
Had you used language that expresses what you're trying to communicate and not something different, the people here who are only trying to help [:)] would have answered Yes, that is a limitation of V-Stack, and there are other hosts that have more slots.
However, we don't know whether the percussion player will in fact require lots of instances to cover all the different instruments. Therefore running out of slots may not be an issue. If it is, the answer is not to use V-Stack.