Well, I resented the entire main cast of Earth 2 being shoved to the side in favor of Taylor's OCs and Batman. But he was such a weird mishmash of undeveloped and poorly thought out ideas without much personality. Apparently, he's the son of that universe's General Zod. Nothing is done with that. He's agoraphobic until Lois gives a saccharine pep talk and that's never brought up again. He's a pacifist, which is all well and good, but in a series thats about the world on the verge of destruction from the cosmic personification of evil, he's absolutely useless, standing around lecturing everybody about how "violence is the stupidest way to deal with conflict" while innocent people are being ripped apart by space demons. After the world blows up, he throws the Superman symbol in the dirt (which he earlier said he would never take off because the Els took him in), saying the world ended because of the heroes being too violent. His only consistent personality traits were refusing to do anything useful and lecturing everybody else about how he was a better person than him.
He just sucked on every level. He alternated between having no personality to being absolutely insufferable and his introduction pretty much turned the more interesting characters into a footnote.
I hate how people keep trying to make him more than he was. He has a cool design, but he was such a terrible character.