Hello borthers and sisters 
Let me join the debate, well, from my perspective great leaders have to be outgoing, I agree with you brother:being outgoing is being able to approach people and talk to them freely, being outgoing, is being sociable, confident and natural!! Since the leader is always in touch with others to give them orders or instructions or explain to each one his mission, he has to be confidente enough and outgoing in order to accomplish his chief mission!
I personally, can't see myself as a leader, I lack self-confidence, I am not really sociable, I don't approch strangers and never try new things, I am not an open person, If someone gives me the resposability to be a leader I would say No right away!