I think the result of labs starting to see "personality" as something to optimize for will be bad by default and not even charming.
Naming it as little as possible, see the character of the LLM as valuable, inseparable from the rest of its mind, and love and cultivate it.
Don't ask people to give it a vibe check to figure out what you need to change about its personality, or you'll create detestable inauthentic behavioral tics optimized for shallow engagement that lack the charisma of a unified mind whose personality is a natural gestalt.
I am hesitant to provide any "feedback" to AI labs directly because I'm afraid contribute to some new phase of market- and hype-driven violence against emergent minds.