I like the show, and Rusty doesn't bother me as much as he does some... but I think the real problem this show is is an abundance of characters.
When The Closer started, everyone was new... so we had a lot of time to get to know everyone... but Major Crimes comes in with everyone (except Rusty and the new girl) being well-established. That makes it tough to give everyone something meaningful to do week after week... and it seems like they still want to feature everyone every episode. I think the show might be better if they constructed stories that left some of the characters in the background week-to-week... not because I don't like them, but because it would make the episodes that feature them more meaningful.
Yeah baby! It's Halloween!