Premium really has no advantages really for anyone, they really do need to add "lots" of new features to it for all users: models + customers.
Who TRULY cares about different font and font colour? Who doesn't already have an ad blocker installed? The only useful thing for a member is the "Pm any model" function, but even then that is pointless as most models charge for PM, or don't PM.
I have been wanting/hoping they add new features to Premium for such a long time. I see other competitors to CB, that have great and useful features.
I am not sure exactly what more could be given/added for a Broadcaster Premium, but I am sure you models can think of at least SOME features, such as a "mini" boost each day/week to bump your placement a little bit.