Honestly, Outer Expansion in general is just...eh. It has some neat ideas, like a whole class of erosion-based weaponry and system-targeting drones, but balancing is pretty wack both for and against you. The writing ranges from okay to outright terrible and feels like it was pulled from multiple contributors, only some having a firm grasp on writing or english. The unlockable ships are fine, they have their gimmicks and some have unique systems, no complaints there. This is my second time earnestly trying OE, and while I'm not outright hostile to it this time, I can't bring myself to really like it. Still don't like its unique ending though. No gibs either.
Compared to the gleefully ridiculous but mostly well-built Forgotten Races, OE is just disappointing and lackluster.