I don't care for Mark, but realistically, I can't imagine anyone not being disappointed at getting Bristol, given the caliber of the rest of the dancers. Tristan didn't get a decent shot with Pam either, but other than that, the rest of them got someone with dancing or performing talent or both, and all the rest of them seem to be getting along decently with their partners. I wish they'd gone into why Mark missed a rehearsal. Did he just blow it off or was there some reason he couldn't get there that he couldn't avoid? If he just blew it off, then no, that's not professional, but right after complaining about that, Bristol turned around and walked out on him, and we never got any indication that she came back either. If that's the case, they were both at fault for missing rehearsals. Mark's having to do way more stroking of his partner's ego this season than anyone else. Kirstie, for instance, knows she can't keep up with the rest of the dancers either, but she's decided to deal with it in a more positive way, and she and Maks at least appear to be having fun.
ITA that the elimination needs to be only an hour. I very rarely care about the "entertainment" during that show--I just want to know who's going home. They could cut it to a half an hour, and I'd be fine. As it is, I frequently flip back and forth between it and other shows or just tune in towards the end to see who's in jeopardy.