My point is made in the first ten comments. Vampiness means very different things to different people. Calling someone very "vampy" could be a compliment to one and get you slapped by another. If we are going to have useful ratings they need to be rating something that at least has commonality across raters.
I am pretty sure the founder was looking for a V word to go with value and vibe and the one chosen is fine as long as most everyone knows what we are supposed to be rating.
One the same note "value" is used very differently by many reviewers. Some will hate a club and still give it a 9 value because beer is $2 while others will use it to rank how much extra can be had even though a hj is $150.