Cummins will have the title but Smith will be the one directing traffic on field
The advantage of Smith as vice captain will be his ability to tell Cummins when he should be bowling and when he should take a spell. I've captained as a bowler and sometimes it's difficult to know exactly when you should be bowling. You tend to either over-bowl yourself or not enough. Cummins is our key, and he needs to be bowling at the right time.
For people who are against Smith as vice captain, I've yet to hear alternative suggestions ... well, none that make any sense. Smith's done the job and I can see him being a genuine help to Cummins.