I've been on eBay since 1999, so I've seen it become slowly buyer biased. I've not done many auctions, mainly just buying and selling for personal items .. possibly less than 2500 times.
I've accepted most of ebay's policy changes and there have been times I've felt really hung out to dry. I'm happy to see eBid picking up momentum and hope it will continue.
I think the offer of Seller+ could easily bring more sellers and subsequent buyers to eBid once the word is spread. Its a really good deal and it shows that eBid values sellers just as much as buyers. In my opinion, you want to take care of your sellers and keep them happy just as you want buyers to always feel like they get a good deal. eBay has had the luxury of a constant onslaught of new buyers and sellers because it is viewed as the only auction site. Just give it time, the platform here is slick .. the more sellers that migrate over, the more bidders.