Making a suggestion, and also trying to understand the logic behind it.
I understand that Presence solely affects your companion. So it's good to have, provided you have a companion out so that you can benefit from the stat.
However, in a full group you get nothing out of it.
It seems to me that, just looking at the word itself, "Presence" should affect anyone around you. If you have a Presence of say 500 points, to me that means you have a high, or Commanding, Presence. So why should that not benefit your teammates as well, especially when your companion isn't with you?
I don't care what kind of buff teammates get from Presence. But to me, to have a significant Presence and have your teammates completely unaffected by it seems a little strange.