I'm going to pick up on this because its a comment I see frequently and related to a lot of rules, not just VAS. Back in the 1980s I bought a set of WW2 naval rules called "General Quarters". Between the time they were published and the mid-2000s the only items that were published were the original rules and the WW1 version. This was and is a "great game" and it managed to become one of the premier naval wargames rules on the strength of just those 2 books. Spearhead is another great example - one rulebook and what is it, 2 scenario books? Still one of the leading WW2 rule sets. Fire and Fury? The premier ACW brigade level set of rules, with one rule book published 20 years ago, two scenario books and only recently a regimental set published. Or how about DBA? one of the most popular sets of ancient rules, published in the mid 1980s, still going strong - it has a revision every 5 years or so, but thats it, just one book.I think you will see a great game slip away if they ignore it much longer.
Why do people think that rules will "slip away" just because a publisher doesn't churn out endless supplements and revisions for it?