I like Charlie, but you've got a decent number of wingers... he might be 3rd choice at best if Ibitoye, Earle and Micalcius play well.
I was really disappointed to lose Aspland-Robinson and I'd be equally gutted if Walker goes. Along with Smith, he's one of the few players we have who can create something out of nothing.
Our wingers aren't really good enough. Visser blows very hot and cold and, as good as he can be in attack, that is tempered by him being a turnstile in defence. That really doesn't help given how pourous our attack is at the best of times ...
Earle has a lot to prove. He has the physical attributes but after his injury, he's been given an easy ride and should be achieving a lot more than he has so far. He's been competing with players like Maitland and Wyles at Saracens who are good, but given how much he was hyped, he should have been able to get ahead of them. Saracens don't let go of quality players of Earle's age ...
Ibitoye has the potential to be something special, but he's not ready yet IMO.
Jonas had never played Premiership rugby and as AFAIK, there's been no injury update on him in a long while. His injury was described as a 'multi-ligament horror injury' at the time, so it's not a given that he'll be back and Premiership-ready ...
Alofa and Ross Chisholm are decent squad players, but aren't first team quality.