Was Booker a Mistake?

Hollywood.com has included Booker on a list of spin-offs that shouldn't have been. Though I agree with several of the selections, I can't get on board with this one (and that has nothing to do with the whole "just an excuse for Richard Grieco to get naked" thing).

Unlike some shows that made the list (Joey, for example), the writer doesn't actually criticize Booker. Rather, the argument seems to be that it would have made more sense to keep Dennis Booker where he was, as added "edge and man candy" on 21 Jump Street.

Yep, I've totally posted this before...in my very first post.
You know you wanted to see it again.

While I'm sure none of us are going to argue with that characterization, I think that 21 Jump Street ran its course, and I don't think I agree with the writer's suggestion that Grieco's continued presence could have kept the show aloft after Johnny Depp's departure.

What do you think? Did Fox make a mistake spinning Dennis Booker off into his own series? If so, was it an "ugh, that show really sucked" kind of mistake or more of a "wow, 21 Jump Street was so much more awesome before you pulled that character out of it" kind of mistake? Would the original series have lasted longer with Richard to hold our attention?