I know it's permitted in KCBS rules, but in the events (MD) that I've judged, I've never seen sliced pork butt. That would definitely make me take a 2nd look.
My favorite part of the taste is usually getting a nice piece of bark. You've got a nicely seasoned outside, but my personal preference is to taste rub and not sauce. Since I can't taste your sauce, I'll just say the generalization that I often find sauce that distracts from the taste of the meat more often than not.
I'd like to see the meat looking a bit drier - not sure if it's too greasy or not on the inside.
Also, don't forget to practice with appropriate greenery and your official box (assuming KCBS here). Plating theory from many places would have you use odd numbers and symmetry. Slices like this might let you fit in 7 pieces, which would both give you odd numbers and give a little something to the TC. :-D