My favorite commenters/contributors are quite identifiable by their phraseology, wit, and wisdom. And I think the reverse is true. Spending much time here brings a familiarity of who is saying what.

And in rereading your expected result, I now realize I don't know how your proposed change would change the signal-to-noise ratio even without the above.

Do you have any evidence that this takes place?

Your proposal would make it more difficult to follow conversations in comments.