Could we ask the PPRuNe admins for a VA specific forum ? It would get a fair bit of traffic I think.
Actually, airline specific forums have not been very successful and a number have been close or removed. You could ask but unless you could demonstrate strong demand, I doubt it would be granted.
The same could be argued for Qantas, Air New Zealand, Air Niugini, Singapore Airlines et al but the value of PPRuNe is in it's public forums open to debate by all; there is little value to the PPRuNe community in closed shop airline specific forums.