Well, this forum is titled “Official Thimbleweed Park” forum. I fear that this forum doesn’t “invite” (new) adventure game fans at all. People will stumble over this forum if they are interested in TWP and/or need help with the game. So I don’t think that the situation would change if we focus (completely) on point-and-click adventure games. And there are no news about TWP (if there ever will be news) that could attract new users.
We are here a bunch of TWP fans chatting with each other about the weather and other important things. 
/edit: That’s my opinion. 