Re: Spiderman in the Avengers "world"?
I want this to happen in the worst way.
I had heard a rumor that Stark tower in NY came close to making a cameo in the ASM. I can't remember where I read it, but I believe it was close to happening.
On the Ultimate Spider-Man cartoon on Disney, they already have the cross over with Agent Colsen as a regular on the show. I've always thought of this as 'testing the waters' type material for the younger general audience.
In fact, on this week's episode Ironman, Captain America, and Thor showed up to ask Spider-Man to join the Avengers. The Episode ended with a 'To Be Continued...'