@waxeagle
First, no disrespect meant to our current moderators. C.Ross and Brian are not as active as they once were on the site, but when they are they are still extremely helpful and Mxyzplk is/has doing a lot of the work by himself and should be lauded for the time investment he has made in RPG.SE.
That said, I think he can get overworked, and that the site could only benefit from having more mods that were active. As a higher-rep user, I try to take as many review actions as I can to assist. That said, I still feel the addition of new moderators could help to spread the load.