Before I get spammed, let me tell you what I did.
I made a new user group called Veterans. They can rate photos and Dios, while regular members cannot. There are only 52 Veterans on this forum right now, and 342 Regular members. The criteria for becoming a Veteran will be secret for now.
I wish I could make it so you can only rate when you comment, but that would take some programmer work and a few hundred dollars, so I'm going to pass on that for now, unless we want to pass the hat and get a collection going.
Let's see how Veterans rate pics and dios, and see how it goes.