I feel the Same Way... I wish that eBay allowed Silent Bid Auctions...
You can get Caught Up in the Bidding Frenzy, but later regret it...
Something like this would work similarly to how eBay does now, and much better off.
A seller puts a minimum bid.
You put your sealed bid. Other bidders put their sealed bids. In theory, these bid are the max bids for each person. If you have the highest bid when they are unsealed, you win the auction, but pay the price of the second highest bid. If there are no other bids, you will pay the starting price.
This would results in sale prices that are similar to current eBay auctions, but would basically eliminate the need for sniping. It would help prevent shill bidding(which is a real problem). Also, one of the biggest downfalls with a Vickrey auction is bidder collusion, however since eBay is so large and other bidders are basically anonymous, collusion would be nearly impossible.
This system for eBay I think would eliminate many problems, but it would prevent bidders from updating their bid based on information about the other bidders bids. So it will prevent bidding wars, which sellers probably would not like.