Egosoft just annonced their next game btw, X3 Terran Conflict, due out 3rd quarter of 2008
http://www.egosoft.com/games/x3_tc/info_en.php
Also for X3 Reunion you may want to check out the XTM mod
http://www.thexuniverse.com/forum/forumdisplay.php?f=18
I think though the biggest problem alot of people who dont care for the game is due to the sandbox setup of the game where other then a short storyline quest series, there is no "end" to the game.
Me however I love x3