Potts is humble but also critical and not afraid to call a spade a spade. You can see that Potts is the kind of a coach that would sit you down and give you an honest appraisal of how you are going and will not blow smoke up your ass. Having said that, if he is constantly telling you where you can improve your game rather than slapping you on your back, maybe you will improve.
Potts brings accountability back into the team, I think even if Potts moves on next year, the benefits of bringing Potts in will be felt next year.
But Graham on 360 said it best when he said "Potter is doing really well, but the team has no real pressure on it" things could change when pressure returns and expectations are high. With a season of experience and adding players such as Kiks, Mahoney, and maybe Skelton expectations, the Dogs will make a jump up the table and be in the 8.
On Obrien, it sounds like he is not afraid to blame the players and everyone else for his inadequacies. I know Klemmer is not the kind of player that handles criticism well. I still put him wanting to leave the dogs because one-time director Paul Dunn suggested he needed to bring an offload into his game. So what's going on with Klemmer at the moment probably confirms the problem OBrien has with his team. Just imagine earlier in the season when the Knights's form went away, and they were looking at getting back to winnings games, Obrien would be sprouting shit saying I've been in 4 grand final teams I know what I am doing why aren't you listening?