Sorry, but this just doesn't work. Garfield Minus Garfield is genuinely funny because the original comic centers around a cat and his owner (who is the only one that can hear the cat's voice anyway). Remove the "imaginary" component and Jon becomes far more warped that any of us had originally thought when we first read the strip.

This is just another attempt to cash-in the success of that model, but Dilbert's setup doesn't allow for it to work as well. Even the Garfield that was translated to Chinese and back to English was only funny in one or two instances. Oh well, I suspect we'll see more attempts to steal GMG's spotlight before someone else tries -god forbid- thinking of something new.