I'm annoyed with Mikkayla but I REALLY hope she doesn't get booed. The only HM is BB history that deserved a boo was "Carlo" from BB03 (he was mysoginist, cruel, disgusting human being and nothing about his behaviour should have been condoned). Mik has does her best and she's been a great HM for the most part. It's just unfair booing her.
I don't like the live audience showing their opinion but remember they do it through all the live show episodes anyway, they boo/jeer/aww/laugh throughout every one of those episodes now. That can actually be even more annoying as it relates specifically to happenings in the house.