Give us all the ability to check someone's Charisma so we can treat them appropriately.
Probably bad idea. There is many ways in which poor charisma can manifest. But knowing players, charisma measurement will cause reactions to be blown out of proportion with significant danger of becoming a meme.
Unsurprisingly I am in favor of this suggestion. I don't think it gives you any secretive mechanical information but it does let you judge for yourself if someone is overplaying their charisma and treat them appropriately.
If someone is giving you the hard sell on some political agenda and then you see [John McPolitician's Charisma is Pitiful], gives you a better idea how to react.
I think this is useful. I would appreciate such a tool.
It should demonstrate the current modified Charisma of a character, to benefit the buff that Mesmerizing characters receive and to empathize the impact of reductions from various items or curses.
I'll add this. It'll just append to the description