I mean .... OMD happened in 2007 and people are still reading the ASM book in 2014.
(1) currently, Spidey deals with alternate realities;
(2) the new Secret Wars will be about that, as well;
why not create a buzz around the "return of the marriage and little May", even if, at the end of the story the 'statu quo' is the same after that, on Earth-616 ?
Thus, people will buy the books because they want to know what will happen.
Somehow, I don't believe that Marvel will erase all their previous bad stories only to return their flagship character to the problematic status that he had before 2007.
Wouldn't it be easier to create an Earth-One where Peter is single and an Earth-Two where Peter & MJ are married ?
I mean, we are talking about the same creative team who just killed the Peter & MJ of the MC2 universe ...
Who killed the pete and mj from the MC2 universe?? Who could do such an awful thing???