My original thought was to make larger hamburger chunks to be closer to eating an actual burger, but as I started cooking I didn't like the way that was turning out so chopped them up a bit more. If I did it again I'd make them even finer as you suggest.
I skimped on the mozz because I wanted the focus to be on the bleu cheese... but to be honest that pre-shredded low-moisture mozz has so little taste to it anyway that I might as well cover the whole thing with it, purely for the visual factor.
I'm not sold on the look at all, the presentation is lacking. I was thinking about a flourish of BBQ, to closer emulate the Red Robin Bleu Ribbon, but in my taste testing with the BBQ it didn't go over so well. Even a little BBQ covered up the chipotle mayo, since I wanted that to be a flavor highlight. And I use BBQ so much as the main sauce on all my other pizza creations, I wanted something different for a change.
As for the mayo, it was the quick simple chipotle tabasco + mayo, but here I think it would be worth it to dice some chipotles in adobo. I had to add way too much of the tabasco to bring the flavor out on the larger scale, and it caused the mayo to turn into a soupy mess. The fresh chipotles and the addition of the adobo sauce would drastically add more flavor, and zing!
So in conclusion, it's a work in progress, and I'm still pondering that one extra topping that will add some color.