I picked up asylum/city/knight last year when it was on sale for some ridiculously low price since while I had played asylum/city/origins on PS3, I never got around to Knight. Needless to say it was an awesome experience, and heavily recommended to anyone who is a fan of these games or the old 90s animated cartoon. Nothing beats having Mark Hamill constantly talking smack and chattering in your ear. Makes you miss Kevin Conroy even more.
Probably not going to bother to 100% the riddler challenges though. Too many games and just don't have time for that any more

I still have a certain nostalgia to growing up in the 80s/90s where you probably got 1 or 2 new games a year, so you'd 100% them just due to lack of anything else to play.