Nobody but GD of course. Thoughtful, smart, shy,stylish an great leadership skills what more do you need in a co-captain ?
CL the bad ass bitch of them all. Ship up or ship out. In a fashionable way of course.
Kim Jong Kook aka Mr Capable. Strong, intelligent, an capable of anything to achive a goal. I think he'll work well with the brains.
Tao may be able to fight if it doesn't suprise, frighten, or hurt him. If given the choice to run he'd probably take it an regret later after some thought.
Is Rain. Being the next to oldest a major entrepreneur an more versatile member makes him just as smart and wise as everyone else.