I haven't played it yet, but read about it and watched let's plays on youtube. The Terran Conflict version is awesome though. Also, there are bugs, especially with the version for Albion Prelude. Downsides: it takes a pretty long time (several ingame days) for any plots to start due to the unlock requirements. It also includes incredibly cool things like race-specific stations for each race, several completely new plotlines, drone carrier frigates that manufacture their own drones and mobile factory ships. As an overhaul, it comes with its own completely new universe which starts small but expands over time. The Xtended (XTC) mod (this is the one I went with). There are several options (I've only found the time for one so far:) A bit late to the party, but I was in your situation a few weeks ago and also didn't grab LU because of the missing plots - I find it hard to stay motivated in the late game without a story reason to keep building my assets.
