It is those very sort of things that is behind Midnight's (or my version of) suggestion behind an 'evaluation system' where the members of the squad will be required to evaluate each othe, after the mission is done.
If everybody feels a certain pilot is a selfish prettythanghole with the "first in at vulches, first out when being vulched" sort of mentality, he'll be evaluated at low scores despite his personal skill or rank, and thus, will suffer some sort of penalty for it.
Likewise, when a certain pilot falls in an unnecessary danger by doing stupid things, and another has no choice but to try and save him, and they both end up dead, the guy who got in trouble will be evaluated lowly, and the guy who tried to save him might be evaluated highly.
With the progress of multiple missions and multiple evaluations, it will soon be determined who's the guy that should never ever lead a squad, and who's the kind of person that has the attributes to make a good leader.
It really depends on how HTC will make it, but I'm pretty sure they also grasp the importance of such evaluations, which is but the only possible way of balancing things out concerning this problem.