While its obviously not impossible that mozzes would also be back ended, i wouldnt think to that degree.
I still think Mozzes can be very good for 1 or 2 more seasons. They have been playing badly (or just not trying too hard) on purpose for a while now. Dont think we need to shed mozzes. They cover the whole backline as backups at worst. At best very good players. I dont think they forgot how to play or are past it just yet. I dont know if they have more than a couple seasons left though.
Im not judging a lot of players while Des is still here. I think many will fire up under a new coach. The board may save itself paying Des out and picking a substitute the members will be happy with. Doesnt need to be a super coach. A number of premierships in recent years were won by "normal" coaches. Outside Bennett and Belamy there are no super coaches, the rest are normal. Normal will be fine after Des.