One of the biggest problems with Arkham City was the stupid amount of Riddler trophies that were spread everywhere - there were like 800 of them across the whole game, and did anyone actively seek them out like in Asylum? Of course not, we all just watched the final cutscene on Youtube. Hopefully Knight will at least have a better system for tracking the side quests than City too, as once you'd discovered a body loaded with clues as to the killer's whereabouts, tracking them down was literally just a case of rooting through alleyways until the next clue hit you in the face. Hardly anybody bothers with the 'collect 'em all' side-content in games, let alone Arkham titles and their Riddler challenges - so factor that into a five-times-bigger, far more detailed Gotham and it's just not going to happen.