I don't think we should attempt to have a ball playing lock.
I think our side suits a power game through the middle and shifting the ball out wide to our strike weapons.
I think a ball playing lock would just confuse things.
What I think you are saying is we could use more creativity through the ruck which is what Mozer will bring.. I am keen to see him get more minutes. Maybe clinch the starting role at some point next year. Walters would still make a good utility from the bench.
We could also give Haas more of a license to get creative.. More offloads etc.. He still has levels to go up in his game.