man speed of dark is so clever!! his injections of moderator commentary into his post is fantastic! Let's conveniently ignore the fact that if I were chosen to draw such a t-shirt design it has nothing to do with modship.
In terms of active art subforumgoers, I'd say that each artist brings something different to the table. Taconinja's style is probably more appropriate for a poster than for apparel (otherwise you might get a few stink-eyes from bizarre shirt designs). I think Skelebro and Tankman's "smooth flash lines" style would be suitable, but I haven't seen what kind of designs they are capable of outside of portraiture. Me and Zack's pixel art with enlarged pixel resolution would look the coolest and most appropriate considering the original t-shirt designs. Also, I have a feeling that Slob could make a dope-ass design if he wanted to.
Oh and don't forget Mr. Awesome, who would somehow turn the 3-dimensional shirt into a 2-dimensional object.