I’d like to bring this up here before in the public eye.
Now, I didn’t run the mod but from what I hear the assassins had Greater Incorporeal. And Greater Incorporeal pissed people off. Those green assassins were immune to Beltinian and val’Ishi abilities and people were upset that the one moment their character should have had to shine, they could not. Ghost Touch Runes being immune made people feel they were punished for being prepared.