Why or Why wouldn’t ebay accept this feature?

There are so many new performance standards for sellers but it seems like hardly any for buyers.

It would be nice if ebay could create a feature that allows sellers to see a buyer's performance rating, too.
Not just their feedback because obviously now that is a mute point. Every buyer is going to have 100% positive feedback (still, what a dumb idea by ebay).

It would be nice to see how many times they have opened up a case (whether it be for items not received, item not as described,…

Why or Why wouldn't ebay accept this feature?