I can honestly say I'm excited for this. I liked Sam Raimi's first two, and I really don't care if it's "too soon" to reboot. I don't know how many times this has already been done to this character in other mediums.
The "Mirror's Edge scene" looks pretty cool. I actually got chills when it started going (oh, and I watched this earlier this morning before reading your thread title, so I knew what you were getting at). I love a good web-slinging scene and this one took it to a whole new level. It was also pretty clever because they didn't show you too much of Spidey himself, just his limbs/shadow/and a brief reflection. I also don't think it was too Mirror's Edgy. At least that wasn't the first connection my mind made. If there were glowing squares on all the places he was clinging to then maybe, but I don't recall any web shooting in Mirror's Edge either.