Some thing needs to improve about the feedback system, but this doesn't sound like the answer.
I've been using paypal for years with over 100+ transactions and 100% 140 feedback without a problem. I keep a separate bank account for paypal, and I keep both accounts empty moving funds out of harms way to a private account.
The biggest compaint I have about the feedback system is you only have one line (80 Chars?) to describe what some times can take a paragraph to get strait. Give us more room, and give us a chance to change feedback once some mediation has gone on to resolve issues. Orrrrr, let the ebayer block feedback options until ebay has a chance to review a dispute.
Plaz