This is one of the things that Neeld can control. If he takes MM's advice and becomes a control freak at the onset he will hand pick a captain.
However, personally my preference would not be Frawley, he gets big names to defend every game and he needs to focus on that. It's different for Maxwell, he just floats around the backline and looks upfield sorting out who should be where etc.
I'm not a fan of Trengove as captain at this point either. Too young and although his form and potential is exciting, it would be a massive step up for him. Give him 2 or 3 years to develop his game and solidify his perfromances, then he'll be ready to slide across into a captains role without issue.
If our motto is hardness, I'd take Jonesy to lead by example, but as I said, Neeld will pick someone who has shown him with their actions that they should be C.