When you say “make him a worshipper of Anti-Life”, what exactly do you mean? Is he dedicating his conquests to the glory of Darkseid? Because that I feel serves to reduce Mongul to another foot soldier of Darkseid. Now deciding to emulate Darkseid’s tyranny could work perhaps as long as there were some differences. Making Mongul more hedonistic, more in love with fighting, and eating, and f***ing could really help set him apart from Darkseid. And I have to say the New 52 did a good job of establishing Darkseid as a threat that requires the whole League. He’s not a “mere” Superman villain anymore.