The second post of this thread has a link to the WVA website, and also to a couple of other sites that may be of interest - to get the "flavor of things" for use in preparing suggestions(?).
At the front page of WVA website, near the bottom, you'll find an email link:
hq@wvfest.com
The link is listed as "for requesting information," but we have received replies to specific questions. The organization has a somewhat "spotty" reputation regarding acceptance of suggestions about organizational/procedural things, but this is as good a place as we know of for suggestions about performers/acts.
It's a fairly small office, with few people active in the off-season, so anything that gets in the front door will likely be known to all.