I think that the Ag lacks members compared to other global sites i know because many believe that they need to be game makers in order to join or that if you are not a game maker, you will be banned, disallowed in the threads and stuff. Although the whole site is trying to prove the opposite i think that some space from the ads could be cut and this message be entered. It could also be in the game pages which are the most visited. I myself had a little of this problem and i know many people who have it too and i think that it should be negated with more "eye-hitting" means.
I don't think that AG would scowl upon normal users as there are too few people who know how to make games sophisticatedly enough to be even close to flawless, that there would be no games because there's nobody to play them.