I really enjoyed SSM #1. If you follow Dan Slott on Twitter he's been saying for months that you just need to wait and read SSM #1 before making judgements, so I don't think it's a massive cop-out by Marvel at all. SSM 1 would probably have been plotted and storyboard in the middle of 2012, so it was always dan's plan to have it this way, he's never tried to say this is the absolute end, he's dropped hints for months that the story wouldn't be completely over in ASM #700.
Plus, he's already written 6 issues of SSM, so he's not diong this on the fly. I think it's the media that have caused a storm, Slott's actually been pretty good about the whole thing.