As far as guard duty goes, as it is right now, it's pointless. Because there's not enough people doing a prison break to merit it. And if the bigger groups DID start doing prison breaks, the spawn inside of the prison would be camped. Maybe they thought the rebel tower defense game was too strong and decided to put cops on the inside.
I don't like the way the prison is right now either. It's hard to find a prison system that works for everyone. MY favorite was pyrgos.
Just as long as the prison is fun is all I care about, and it's not right now.