I don't neccessarily think there is guaranteed better options than BA, but there has to be better options than Murphy. In fact, I'd go as far to say, they're couldn't be worse options than Murphy, particularly with someone like BA as coach.
We need two new senior assistants. People with superior tactical nous. The Head Coach has limitations and he needs to be told he needs to get assistants that counteract his limitations. We replaced Kidwell with someone who is probably really just on a temporary deal until the end of the year. Given our defence this season he probably isn't the answer, but who knows how much input he's allowed this season.
Murphy just has to go if BA remains. For mine, it is no longer negotiable.
Jim Dymock is looking for a job. So is Matthew Head. I'm not sure if Mary is keen for more of a full time gig with the club or not. There are heaps of others out there.