Just bought and finished the game on my day off. Nothing special. I found myself loving it for the art styles and concept, and dialogue, but not so much for the gameplay. It was fun at first, with the promise of more unlockables, but after I finished I realised there was still only a very basic combat and the only thing to replay the game again for are costumes and achievements.
Personally, for the next spidey game, I would love free roam again, 616 art style with a Spidey who is able to do all of the things that the various spideys could do (well, stealth, web, agility etc), a proper story and more than just 'costume' unlockables.
Overall, SD was fun, but nothing new or special. Sure there have been some crappy spidey games as of recent, but i'm not going to praise this as the next messiah of Spidey games simply because it was good. It was fun but still left alot to be desired.