Here's the thing, Morrisons a big name writer in the comci book world, and for some reason he's got his own chunk of fanboys that fallow him around and read everything he writes, so why put him on these major titles that already have pretty big built in audiences that are going to read these books despite who is writing them. I guessing if you're a big enough fan to know the name "Grant Morrison" that chances are you're already buying shit like X-men, Batman, Superman, etc. anyway, so why not put him on a title that needs a major shake up to get sales going again, something these fanboys prolly dropped along time ago, something like Aquaman, Green Arrow, or hell even Flash, or Wonder Woman? those seem like books that froma sales perpective would only improve with Morrison writing them, they're all fairly decent names that don't get much attention. I imagine Morrison could do what ever the fuck he wants with anyone of those titles and not upset and large portion of the comicbook universe