Ashurst would probably be most people's choice. I think he is one of those "lead by example" type guys.

My only concern would be the same as I have had with Kirmo - is he vocal enough? We've all seen what an influence certain captains have on their team and even more so, the referee. I don't want a Wakey player constantly whining at the ref like some players do, but I do feel that at times we don't question some ridiculous decisions.

My thoughts also Fordy.
I really don't want to make comparisons but such as Turner and Fox led by example - by god I wouldn't have liked to have underperformed with Rocky Turner on the pitch. I saw him face to face with some of his team mates rousting them and encouraging them at the same time.
I accept things are different now, leadership qualities though remain the same to me. You have to lead by example and positively do something about your mates on the pitch. Likewise, make strong but acceptable representations to the referee.
I don't know who I'd burden with that role but one of the team must stand out.