I actually wouldn't mind chaplin getting a gig as vc. I think it'll suit him well.
I suppose you have to look at the role the coaches give him. His BnF placement certainly suggests he's doing a lot right on-field and every time i've heard him in the media i've been impressed. I think he deserves it, but also I see him as the kind of person that would be better with the added responsibility.
I had never had issue with Chaplin until after the loss to NM this year in Round 22. Chaplin blamed the umpire for the loss.
It was the easy way out. I'd have prefered him to say something like-
"...we were disappointed wth the decision, but in the end I and the rest of the team made numerous mistakes throughout the match that cost us. To pin the result on one umpiring decision is unfair and probably doesn't take into account how much we, individually and as a team, need to improve before we can even think about blaming umpires for a loss."
They're the kinds of things I'd expect to hear from a potential Vice Captain.