Wow, this is insane. I was just logging in to post this exact same question myself (for the exact same reasons) and I see it right there on top of the recent posts sidebar. Crazy.
I would appreciate a bit more detail, however, like a mission by mission short synopsis if anyone would take the trouble to write it.
Also, I have pre-ordered Dark Avatar, but I have one heartfelt request for the devs re: the new campaign. I want to get into the story and enjoy the campaign, so could it please be arranged so that the entire tech tree doesn't need to be re-researched every mission? More focus on story and action and less on planetary/research developement (on the further in missions, that is, obviously in the first couple development makes sense). Now, I only made it to about mission 3 or 4 before I quit in frustration and began playing sandbox exclusively, so if this actually does happen further on into the campaign I apologize.
With such a complex and well developed storyline it should be easier to get into and feel a part of.