E-bay won't ever do that. 1: They don't want buyers to get "huffy" and decide to play somewhere else. After all they might actually really buy something one day. 2: It will give sellers a reason to start cancelling bids and bbl the suspect buyer. Which may might slow down auction increases and lower fees. 3: Occasionally sellers might not go through the NPB system and E-bay will get to keep those fees.

What do FEEDBACK revisions have to do with any of the above?

Although I do agree that it is not a good idea to be showing how many FB revisions has a buyer agreed to.  Buyers may feel that they do not want it to show on their ID and refuse to revise unfair FB.