As an introvert myself, I can definitely relate to some of this. Your comment about being in class and needing time to process the information is helpful to know, since I thought it was just me. When it comes to almost any new experience, particularly conversations I haven’t prepared for, it’s often hard for me to come up with follow up questions, because I’m still deciding what I think about what’s already been said.
Anyways, I agree that the characteristics you list are qualities that more leaders should have, though it seems almost impossible for people to accept a leader who isn’t very extroverted — otherwise people don’t notice them enough to even consider them. That’s part of why I think your last step about balance is so important. I consider myself an introvert, but I find myself able to be pretty extroverted most of the day, and actually enjoy it, as long as I have time to recharge on my own afterwards.
It also seems easier for introverts to roleplay as extroverts rather than the other way around, maybe because extroverts seem to be more valued in our society. If more people thought to tap into their inner introvert they might be able to find a better balance.