[MagiChau]

I find myself agreeing with the importance of having a good drive coach. Since there will be an analyst they could take care of overall alliance tactics for the match while showing the signals to the feeders. I believe it should not matter if the person is a student or mentor if they have what it takes to assist that drive team. Students may have more knowledge of the rules and thinking up of how to assist the drive team due to generally, more free time. Mentors may have more experience from past competitions or life experience to lead that drive team.
There is no right answer ever since circumstances always are changing under our noses.