Simple. Keep letting him talk. You don't have to change what is inherently funny. All you need is a simple final panel with a large number of caricatures of mildly internet-famous people (such as yourselves) giving him the same reaction we've all given him: awkward, puzzled looks expressing "Really?"
Or you could take it from different critics' angles, Yahtzee sicking imps on him, Jim sicking mini action-figure Willam DeFoe on him, Justin using his "tank ninja" powers, TB using his "lawyer powers", Angry Joe setting him on fire or something, Gabe and Tycho from Penny Arcade doing something... weird.
...come to think of it that would be awesome, like a game-critic "Superfriends". How has this not been done before? oh right, image rights and copyrights... dangit.
PS: Love the derp-face on him. That's pretty much all you need.