Heya
The Dev's took a "reboot" approach to the 4X-Space genre.
The changes introduced in the first two expansions made the game "more complete" in comparison to what many folks were initially expecting from the original based on other games in the genre.
So most folk consider the "complete form" to be the original game and the expansions,
Born of Blood,
A Murder of Crows and
Argos Naval Yard.
As for
Fort Zombie, I suggest waiting until folks start playing the game before dissing it for what it appears like now...