Game should display grey numbers when you miss a positional

[whiskeybravo]

It's completely relevant. It clearly shows front, flank, and rear on a target.

It's irrelevant because nobody is asking where the flank or rear is at. They're asking for in-game feedback on whether or not you hit the positional requirement at said flank or rear.

[Rongway]

It's irrelevant because nobody is asking where the flank or rear is at.

It was a direct reply to

I still don’t have a clear idea of the cutoffs for positionals relative to boss size (how far inside a large boss’ hitbox can I be and still land it etc.)

so yes, it's relevant.