Ninja Theory did the following wrong:
- refused to issue a soundtrack album for Heavenly Sword (despite significant consumer demand)
Considering how well Heavenly Sword sold, could you blame them? One Million copies is no longer exactly achieving great heights according to the fatcats that run the big publishers.
- cancelled Heavenly Sword II (also despite significant consumer demand)
Also due primarily to Heavenly Sword's far less than thrilling sales numbers
- reinvented Devil May Cry in such a manner that most hardcore DMC fans probably consider shoving a 1:1-sized Rebellion replica up their chairman's bunghole.
In other words, doing EXACTLY WHAT CAPCOM PAID THEM TO DO. They [Ninja Theory] wanted to make a straight sequel or prequel, and Capcom kept telling them to make it "more different", until Ninja Theory caved to fans and finally started trying to make new Dante more similar to old DMC (the way he moves, his general voice and attitude, modelling Limbo City after the briefly seen city from Devil May Cry 3, including Vergil, Mundus, Sparda and Eva as Dante's parents, etc.) in such a way that doesn't get them fired by Capcom.
Ninja Theory is in an impossible position; they're between the crushing force of Capcom's glacier of eternal ignorance if they fail to deliver the product Capcom paid for, and the scorching river of lava of angry fans who just want their Devil May Cry the way they like it.
In the most recent builds of the game, they've tried to compromise as far as their contract enables them to. Even Hideaki Itsuno (guy behind DMC3) has told fans not to worry. It's still going to irritate people, but Ninja Theory is opting for a one time burn by fans, rather than risking a glacier permanently moving over and sealing a reliable well of future projects and contracts called Capcom.
If this goes well for Ninja Theory, they'll have money to put out more pet projects like Enslaved and Heavenly Sword, but right now they're stuck delivering what the client, not the fans, want (and trying to make it as palateable as they can).
Ninja Theory is taking all the crap for Capcom's shitty ass decisions, and that's not cool. They're just trying to do their jobs, and reaping consequences that should rightfully be aimed at their employers.
In any case, I preordered the game in good faith.
EDIT: I have been informed that Ninja Theory doesn't actually own any of the rights to Heavenly Sword; it belongs pretty much in it's entirety to Sony Computer Entertainment. You want a sequel or a soundtrack? Go talk to them.