I'll repeat what I say everytime: In my opinion... Spiderman should NOT have a gritty reboot. A reboot, perhaps... but not a gritty one. If you want gritty Spiderman, just go ahead and make a movie about the Noir version of Spiderman. Spiderman is FUNNY. I'm afraid a gritty reboot will take away that funny.
Not saying the movie will be bad. Who knows, if they get some good writers on it, it could be awesome. But until I see a trailer of some kind, I will be extremely skeptical.
Also, remember emo-spidey from Spiderman 3? The part of the movie everyone thinks is stupid and bad? THe promo picture for this movie reminds me of that part.
Ever seen Kick-Ass? I think Spider-Man could work with that kind of tone. Brightly coloured and funny, with great action, but still suitably serious at times. Less swearing and violence, obviously, but still...
But I do agree that they need to give this Spidey some proper quipping moments, something that the previous movies were lacking, IIRC. I'd also prefer if this movie didn't waste its time being another origin story. They should just do what they did with The Incredible Hulk and explain Spidey's origin in the movie's intro, allowing them to jump straight into the story and portray him as a hero that's been active for some time already.