Hi devshoppe,
I agree with you regarding fraud. If a user is able to manipulate feedback ratings, and commit fraud on site, then we need to re-look our feedback system and think of ways and means to improve the same. We also need to strengthen our Trust and Safety system.
eBay is working on such projects and I will forward your feedback to the concerned team for consideration.
I am disappointed to see that you feel that giving suggestion on the boards are not meaningful. Every suggestion will have attached debate and counter points. We may agree on some suggestions, while disagree on others. However, we can be open about are disagreements and yet respect each other's views.
Regards,
Sapana