No-one is turning this into a "Hate the Seller campaign"...I am also a seller, have been for a very long time..not on this ID obviously.

You cannot give a seller anything other than a positive anyway so it is really irrelevant when you leave their feedback.

You have said in your OP than it would be ebay that automated the buyers feedback after a set time...this would NOT give a true result of transactions as the buyer may not have left any feedback rather than a negative.

Not that ebay would ever do as oyu have suggested but on the off chance that they did I think it would cause more problems than it would solve.

And just to reiterate...feedback is VOLUNTARY.