While this is a good idea, it has a few fundamental problems.
Displaying the extended info each time would considerably slow down the loading of the "My Snipes" page. It could also slow down the entire site if enough people had such a feature turned on. Consider for a second if 1000 users had this feature turned on, and each had 10 snipes. To view the extended information of all their snipes would require 10,000 connections to eBay -- thus slowing down our servers and response times.
I, too, would like it if a feature like this would be possible. But at the current time, it is not.
Adam