Wilder is 34 years old. Even if he comes back the same he's not going to get any better at this point. His own trainers (Deas & Breland) already know this, they've talked about it publicly, so instead they've focused all their efforts solely on working with him to land his right hand as a one-hitter-quitter.
When he comes back his opponents will now be looking to get the jump on him early to unsettle him with intelligent pressure. They'll all be stepping to him right off the bat and incorporating parts of Fury's gameplan to push him back and make it rough when they get in on him. Like another poster said in AJ's case he doesn't need to grind him down, he'll just unload. If Wilder can't catch him cold from the get go then AJ will stop him in short order.