Did anyone notice that Melodyne is NOT a realtime operation? You can't integrate this into the style engine and have it change maj7 into min7 in realtime. It's an offline process. Sure, it will help you change a loop that doesn't have the chord you need into one that you do (albeit I haven't seen anything other than those easy to edit patterns they use in the demo), but you are STILL faced with the daunting task of hand editing every guitar loop so that it covers all possible needs. For every style, for every variation, for every fill.
Once again, where is the time for this? Would you care to comment about whether you HAVE actually made a style that uses audio only for the guitar chords, and can play ANY chord, and at ANY tempo (withing reason). How many loops did you use, and how long did it take you to make it? An audio example of it might help...
All I'm saying is... If it is THAT easy, and that quick to do, you are going to make a FORTUNE selling these styles to those of us that DON'T have the time, patience and skill to do it for ourselves. Or quickly find out that they take too long to do to make it worth your time. That is, if they even impress us enough. Oh, and don't forget... if you use a commercial loop library, you will have to get a licensing deal with the original producer of the content. Oops!
There goes the profit!
I really CAN see how this stuff is great for trance, electronica, hiphop, etc.. No-one expects to be able to play a Min(maj7) in that style. But for the kind of music that most people DO use arrangers for, jazz, oldies, schlager, party music etc., complete guitar libraries are going to be essential.
Dom brought the MS out as essentially a MIDI based arranger with VSTi capabilities. Even back then he couldn't afford to hire good people to pack it with cutting edge TOTL styles. Now he has added all this complex audio loop technology, and all of a sudden things are going to get BETTER?
I don't think so.