I didn't make it!
Is there any way to disable the death star? I find it very annoying how easy it is to win with the rebellion. At the very least disable it as a victory condition?
What do you mean by "disabling the Death Star?" If you mean preventing the Empire from building it, all you have to do is find it in spaceunitssupers.xml and change the required tech level to 99. Of course, you could also use the "is buildable" line, but that is the simplest way to do it.
If you want to disable the Death Star's destruction as a victory condition, go to factions.xml and, under Rebels, change this line: