MCCC has had problems in the past - some were pretty well documented - long lines, poor planning, etc. But, the worst of it seems to be the organizers and their treatment of both attendees and participants (artists, vendors).
Last year, I went to the Con on Sunday for the sole purpose of getting a poster signed by one of the people signing - there wasn't a whole lot there that interested me that year and the organizers past behavior just bugged me enough to not want to go (and I do support local artists and vendors there whenever possible - I did buy prints from a local artist the last two years).
My issue starts the guest I whose signature I wanted (Joey Lauren Adams on a Chasing Amy poster)... simply: she wasn't there. The reason I went to this show, drove 30 miles and paid to go wasn't there. @dbaslchi was there and I met him and his girlfriend (now fiance), he saw that Ms. Adams wasn't there and we also exchanged messages with time stamps showing that she wasn't there at the time both MCCC and Adams' manager states she was there.
So I post on the MCCC Facebook page about this, I used their website to contact them about this matter and I even contacted one of the organizers directly (she had sent a Facebook friend request a couple years ago when MCCC was getting some flak about organization and guests - which I had made a few posts about). It was on their Facebook page that Adams manager stated that she was there at the time that both I and dbalschi know that she wasn't there - in fact, con/venue people were cleaning her area and I asked if she was coming back and she wasn't. Of course, MCCC deleted the post and banned me and dbalschi from their page - this seemed to happen after dbalschi posted affirming my story and contradicting the managers statement. It's worth mentioning that MCCC uses social media to post about guests and if they're leaving early and that kind of stuff.
I've spoken to friends more involved with MCCC and was told stories about their personal and their vendetta tactics and the poor way they deal with the "lesser" talent/vendors. It seems like most them hope for a new con ran with a more professional team that actual works with people rather than the "bullies" that run MCCC. I'm told many in the Detroit local scene are heartbroken over the loss of Detroit Fanfare but there is hope that something new may be on horizon.