I wonder if there is any correlation between those who are pushing hard against this idea and the stability of their gaming groups? As in, people who have stable gaming groups whose membership doesn't change terribly often, have no need for this sort of framework and see it as insulting, vs, someone like me, whose table membership varies often, sometimes month to month. In 3e, for example, I played exclusively online. I actually started counting the number of players I'd had at my table and stopped when I reached a hundred in under 4 years.
Heck, even now, since I've started rebuilding a new group since a year ago last April, I've seen close to 30 players at my table. Having something like this as a shorthand would be a godsend.