I know I was hoping, from how things were talked about, that his character death would be off screen, allowing for a possible return in a later episode or later series. It's sounding like that isn't the case, but I'll see for myself as soon as I get a chance.
While I enjoy Jamie's work a lot, I'm a general sci-fi fan, and a lot of sci-fi suffers from rough scripts, poor acting, and the general extra overhead of establishing an entire universe in addition to the normal work of a series that is trying to establish a premise and a set of characters. Some would argue that Babylon 5, for example, took over a season to hit its stride, and while BSG hit the ground running with its first episode probably being the single finest episode they ever produced (of course they had the mini-series to help it along, which was also good, but not brilliant), most sci-fi is just not able to do that.
There isn't enough sci-fi on television for me. So I hope that people will give the show a chance to get its legs under it, even without Jamie around to make the wait more pleasurable. It very well might get better as actors settle into their characters and writers settle into their story.