2) Kingdom Come
Kingdom Come is such a well respected classic that the fact it still hasn’t been adapted in any form is genuinely shocking. For those who don’t know, it’s set in a future that deals with a growing conflict between the visibly out-of-touch “traditional” superheroes and a growing population of largely amoral and dangerously irresponsible new vigilantes.
While that’s all taking place, Batman assembles a team in an attempt to contain the escalating disaster, foil the machinations of Lex Luthor and prevent a world-ending superhuman war. This is something which would be amazing to see in live-action, but for now, an animated version would be more than welcome and quite possibly the best way to do Mark Waid and Alex Ross’ ambitious tale the justice it deserves.