This.
Higby, I have three questions for you, if I may:
1) Will tanks' survivability be scaled down to that of BFBC2, where 2-3 well-placed handheld AV shots were enough to blow a tank up? I played engineer and got most of my kicks from merciless tank-busting, so I know what I'm talking about.
2) When making this decision, did you factor in the common, ridiculous scenario from BFBC2, where the gunner/driver unleashes hell, while his secondary gunner/engineer continuously repairs him? Depending on the speed of the repair, and the amount of fire being taken, this gives the tank something like double or triple effective HP.
In PS1, this "tactic" would have required at least 3 people, which is a bit more fair.
3) Have you considered letting the driver use only the secondary gun? This would be especially fair considering that (as far as I understand) all (or most) of the unlocks for an MBT are for the secondary gun. This gives the guy who spent time certing the MBT+unlocks full use of what he invested time in, while
requiring a second person for the second gun.