It's difficult to imagine any series getting to #100 today without reboots or rebranding. That's just the nature of the current comic industry. Still, I'd love to see SSM go that distance. I know the fan speculation is that SSM will end in time for the new Spidey movie and that ASM will return then but I almost hope that doesn't happen. There's a lot left to explore with Spock and it'd be interesting if the events of Goblin Nation actually humble him and cause him to rethink his approach to crimefighting and towards heroism in general. Up till now, he's been able to feel very cocky about his accomplishments and his superiority but what happens when that gets stripped away? Goblin Nation could see Spock fail and Peter return soon after and that would be a very tidy, expected way to handle it. Spock fails miserably, then Peter steps back in to clean up the mess but I'd actually like to see Spock have to clean up his own mess and really be forced to cope with whatever disaster he's sown. I still want to see Peter come back eventually but I think there's more to be done with Spock and I think it would be more effective and tragic if Spock got outsed as Spidey at a time when he actually had learned and made strides to be a better hero. Whatever happens, though, I have faith that Slott has a great story in mind.