I am shaking my head thinking that people might find such a class worthy of their hard earned cash.
When students pay their tuition fees, they aren't paying for musical instruction. They are paying for the new concert hall, the new recording studio and the entire infrastructure that many music schools are charging you to support.
In my opinion, bass players can learn more and improve further by studying with a jazz saxophonist or jazz pianist. Why? Because music comes first in what they teach. The instrument comes second. And performance, thank goodness, isn't mentioned. You are all intelligent people and can figure out how to perform on your own if you have the interest in doing so.
I feel that being taught to entertain and relate to an audience is mostly a myth perpetuated by bass educators that don't realize that the music that you play IS the entertainment that people want to hear or dance to. Go to any club and watch any band play and you should notice that they have similar interaction with their audience as you do. They look at their instruments when they solo. They hopefully are rehearsed and polished which actually provides a better presentation for the audience than trying to "communicate" anything either though your playing or in your stage manner.
Go with your heart on this one and I suggest that you ignore the rather patronizing suggestion that an audience requires much attention. But, if entertaining a crowd is an interest that you have, go to Las Vegas and watch a couple of shows. You will find everything you need there and save yourselves a ton of tuition money as well.