It might not be an "insurmountable issue", but i cannot see how a guy who has not been closely involved in a football department for a long time until the last half of this season could be the best person for the job, and this kind of "idolising" of great players inevitably gets clubs into trouble.
No doubt he's not the best person for the job, but I think the fact he has been a senior coach and that he would have guys with current experience like McVeigh and Solomon who would jump in with him would mean it would be ok.
For people like me who feel like he was badly treated it would be great to see him come back and coach again, and he was able to deliver a finals win it would be a nice turnaround in a horrible story. I've no doubt a lot of people at Essendon would feel the same.