No way. JMS never read a Spidey story except his own ones, the origin and the "death of Gwen Stacy." His understanding of Spider-Man was limited to only stuff he had written. The whole foundation of history that past creators had contributed was pretty much ignored (or misremembered when it was referenced... like Midtown High being in the city and not Queens). Plus, all the magic totem stuff.... yeah.
I'd have to respectfully disagree. It seems pretty obvious that Quesada began tightening his grip and forcing JMS's hand, when everything like Sins Past started coming out. I would find it hard to believe that JMS came running to JOe Q saying "I have a wonderful idea! Lets take Peter's most fan-adored love interest and completely ruin her name!"
No, I find it much more plausible that, given the impending Civil War, Joe Q wanted certain things played out in a given amount of time, to allow CW to fit in smoothly, and we all know everything that happens to Pete has to be horrible, so Sins Past (the rest after the death of Ezekiel) was born.
As far as continuity, little things like the location of a high school reall don't bother me in the slightest. As long as the main, important things are fine, its all good.
While I loved the new spin on the powers, even JMS pushed the idea that it doesn't change Spider-Man. The new angle was just a reason for new and mostly awesome baddies to spring forth. The very last line of dialogue after the death of Ezekiel says it all:
Tomorrow the sun will come up. You can tell me all the reasons of science that it does come up...And I will say that it will come up because it is meant to come up. I see no contradiction.
Its only when the mess of The Other (another Joe Q product if you ask me) that tried to shove an absolute answer down our throats.
It really makes no difference to me, the reasoning behind his powers; it doesnt change who Peter, who Spider-Man is. Look past your biased hate of changing the status qou, and you can see that the story telling, the depiction of Pete, Spider-Man, all the supporting cast, is the best its been in years. Some of my absolute favorite moments come from JMS' run...and most of them are just one or two panels.
...Of course....you'd be fully in the right for telling me to stop being biased too, when it comes to OMD...
