Except that the buyer may not even be a member of the site. I'll check into it and take your suggestions into consideration once we get the vB3 Enhanced release done.
One thought about multiple feedback, weather you buy one product from someone or 50 - your opinion will usually match your last experience. If you buy 10 things and all transactions go well and you rate the top numbers, but then they walk off with your monry on the 11th, do they still deserve the 10 top ratings you gave them?
In general we look towards eBay for some of our implemented bidding features.
Please do not PM me for support or sales questions. Thank you for your understanding.