Challenge mode was boring as crap when you compared it to the story and multiplayers from other games.
I think challenge mode should still be there, it's a decent mode for a little while. Play as the Joker should also come with the game itself, not as DLC, and provide some medals for that. Then add something similair and make it multiplayer, as suggested earlier, survival maybe, something to do with stealth. I think objective based could also work, and may actually be the better option. Or solving special riddler challenges could be fun as a multiplayer. The possibilities are endless.
It's needed to add longevity. I bought AA and returned it in a week after completing the story and doing challenges for a few days, and got my money back since there's nothing worth doing after the story is completed on hard. Challenge mode just isn't good enough, it's just far too repetitive.
@Neon: Just a thought mate, I will be buying this game regardless, so I'd like for it to be as good as possible.
@whatever: Ooh, bad guys running around would be annoying IMO if you're still looking for Riddler riddles or whatever. I didn't like that feature in inFamous, create a new game and knock out baddies there instead if you'd like it like that. Though the fact that there is only one Batman is a very valid point. I dunno, maybe the guys at Rocksteady can come up with something amazing.
The Realm Of AnarchY♠♥