The best way to ensure professional PAs would be a legitimate effort to reduce fatigue in our cockpits. That is not happening, obviously.
I can see it now...
Joe Junior Something to Prove TCC had to give you a 3 for your PA. You weren't sitting up straight and smiling, and it affected your inflection and tone. I don't care if you're tired. It is irrelevant that you signed on at midnight for an eight hour two-man sector after a 24 hour layover with interrupted rest by multiple Islamic calls to prayer or fire alarm tests at the HH.