Its 2016 already but I'm still playing X3TC with the Xtended mod, however I'm having an issue with version 2.2 regarding the 'plot protection'.
Basically back in version 2.0 you had Xenon and Khaak who were very active and were real threats to you since they were conquering a lot of sectors if you never stopped them from progressing, this gave the game a real purpose and also made it thrilling to fight these enemies and stop them from advancing, it was your task to keep the universe in balance and not let it spiral out of control.
However in v2.1 and v2.2 they implemented a 'plot protection' system that completely destroys these enemies from ever spawning in or conquering a ton of sectors, which effectively castrated the Xenon/Khaak so much they become extinct and the game feels really dull and boring without these threatening enemies.
So I tried that cheat script code (plugin.XTC.Cheat.ChangePlotProtection) that came included with v2.2 to 'disable plot protection', however I find that it doesn't work properly because you have to run it manually every single time you load any save-game or else it has no effect, meaning if you do load a save-game the 'plot protection' is active for a short period of time and it always deleted all Xenon/Khaak in any sectors that fall under this 'plot protection'.
So since the only tool provided to us to disable this plot protection wasn't even working properly, I decided to look further and see if I could find a way to permanently disable or delete this 'plot protection' myself, and found it I did.
If you want to do this yourself for your game as well then do the following steps:
-Enable the 'script editor' ingame by changing your name to "Thereshallbewings", a new command prompt will appear in Advanced->Global Commands->Script editor.
-Open the Scrit Editor ingame and search for the folloing 4 scripts and delete them (DEL key):
(You can do this at any point in your game by the way.)
Now the 'plot protection' is gone for good, Xenon and Khaak will be fully active, they send invasion fleets and take over any sectors in their destructive path, however certain mission plots might get broken because of this, but I personally rather have an engaging game with real threatening enemies as opposed to a dull and boring game.
It took me a long time to figure this out but since I still love playing this game with this mod I thought it would be wise to leave a post about this issue here in case others need it as well.
So have fun fighting the Xenon/Khaak again!