To me, this sounds like the worse idea for a games direction to go in since MARIO BECAME A DOCTER! I can't believe Rocksteady would say this without adding April fools. Prequels alone are a bad idea and have a very small success rate (see Star Wars, Wolverine, and Twin peaks diary bullshit for examples) but they aren't even giving themsevles a chance with this set up.
I mean seriously, what about all those easter eggs like Harley being pregnant, Azrael saying Gotham will burn, Hush replacing Joker and Hugo for main villain, Scarecrow being alive, and a playable Bat-mite. Are they so oblivous to what people want for the third that they are taking a note from LEGO BATMAN 2!
I blame two groups for this. The comic geeks who kept saying "Joker can't be dead. They should bring Joker back. Make Joker a zombie." He's dead, get over it. If you don't like it, maybe you should perfect Lazarus solution and give it to your love ones because, guess what, fictional characters aren't the only ones who die. The second group is the Avengers, who's success have made Rocksteady think that a group of superheroes makes for better cash cow. I'm not saying I don't like the JLA, but I think that if making something Batman, don't throw in the League just so the odd Lantern or Flash fan who doesn't like Batman is compelled to buy it.
I love the Arkham series for its darkness, progression, and that certain feeling you get when you beat up 20 thugs and a titan with one flawless motion (plus other things). Why are they trying to ruin its own series.
Off note: Thank you Comicvine, I needed a good rant.