OK. So what you are saying is that the seller should not leave feedback until they find out if the buyer is going to complain about something - real or imaginary? So, the positive feedback that a seller eventually leaves is a reward for the buyer keeping quite about any problem with the seller's service or product. Now I see.

So, the buyer who is unfortunate enough to have a problem (eg wrong colour, wrong item) with the item  he/she has bought is to be penalised even further by being deprived of the positive feedback that he would have received had he not complained.

Now it is all clear.