I don't know about High Road members, per se. (I mean, after all we do have almost 160,000 members, and less than 1/10th of those are active participants who you might consider "in good standing.")
But that is the idea behind the members-only club, of course. Everyone is known, everyone is accountable. Everyone wants to do more than the next guy to make and keep the place nice.
But, as a current or former member of several clubs, it doesn't usually work perfectly. Probably because of some social-sciencey group dynamic phenomenon anthropologists can explain -- after the group reaches a certain size the character of the whole starts to change. When there's 10 or even 20 of you, you get a very good idea of who's not keeping up their end of the deal, and you feel personally accountable to (and agreeable about) picking up whatever slack you see.
The private, members-only club I'm very active in has something like 1,000 families as members, for a membership of over 1,500 (BullfrogKen might be able to check my numbers there). I know most of what I consider the "core" membership, and that's under 50 people. We see range property shot to pieces. New signs get holes shot through them. "Long time" members show up who have no idea what the rules for a specific range are (even though they're posted on a sign next to the firing line). Trash barrels don't get emptied, unless we do it. And on and on.
The only way to change that is to figure out how to make individual shooters DIRECTLY accountable for their actions, and for putting in the work you want to see members volunteer to do. And, so far, the only thing anyone's come up with to try and do that is "big brother" stuff like cameras, key cards, and "report damage/abuses/violations" systems of tattling on each other.
I know lots of really awesome people here at THR, but I don't think using THR membership as a benchmark is going to ensure the kind of behavior any of us want to see at a range.