I'm not sure how many folks are into world builders/Civ games in general, but I finally got my copy (Hurrah! for beta testing) and have had all my will sucked in already. This one gives you some shorter games by introducing set scenarios restricted by turn limits. Currently playing both a SP and LAN game with hubby and haven't seen any of the issues with MP that Play the World had and couldn't fix. Haven't tried the editor as of yet.
I must say that Breakaway and Firaxis do very intense beta tests, requiring NDAs unlike others I've been in, and their devs are constantly online actually listening to the feedback. A lot of bugs were found and fixed from major, game stopping ones, to minor misspellings. The goal of this test was a bug-free expansion and so far, I think they've gotten it.
If no one else plays it...ah well, you're missing out.