It's my favorite era too, and I feel the same way about DC not collecting the rest of it. Even the DnA period, they also only went a couple of trades before stopping the collections. Legion Lost is awsome enough, though.
The second omni more or less breaks that mold. Of course, it's a hefty price to pay just to see if now you like something that you didn't like before.I tried 5 Years Later and couldn’t get into it. The Watchmen-esque nine-panel grids on just about every page was a major turn off.
Yes, I agree it diminishes quite a bit the impact of the storyline. I was reading the Legion at that time, and was totally entranced by the monthly build up. Amazing how many great stories probably would be ruined by these times of internet hype.The Great Darkness Saga is ok but lacked impact since I already knew who the Big Bad was.
Peace