Charisma is indeed a complex trait. That's why, in the article, I say:
"...it is not a single trait but a broad spectrum of traits that share things in common."
What I'm trying to convey here is that if you try to define charisma, no matter what definition you come up with, you will always leave many things outside its definition. Instead of trying to define it, I think it's better to explore the different traits that make a person charismatic. In the article, I decided to explore three of them: making meaningful connections, empathy, and warmth.
I agree there are many more traits that could describe a charismatic person. I also agree that "presence" might be one of the most important ones that were left out of the article.
Which brings us to an interesting question: What does it mean to be present?
Just as with Charisma, Presence is just another skill that is better not to define but to explore through the behaviors it displays.
"The Tao that can be spoken is not the eternal Tao..."