not sure TechDefs.XML changes affect the game at all any more - anything you have to change would have to affect MasterTechDefs.XLM. And with all the bugs in the tech tree that XML file would have to be changed with every patch. Not sure if any of the other XML files work differently for Crusade but they change the ShipComponentDefs.XML file fairly often as well.
Thank you for catching that. You're very right. It's only 2 lines of code I've modded there so far, so it's easy to keep up.
FIXED. And plus Karma. (Or not. Sorry, the site is feeding me an error whenever I click the thumbs-up.)