I honestly wonder, if Marvel's deal with Sony had taken place like an year earlier, would the Russos have made Spider-Man's role in this larger than what it already is/was?
I mean from everything that I heard, it seems like the only things that Tom really shot was his introductory scene with RDJ and MT, followed by a few shots of him with his mask semi-off. I wouldn't be surprised if they went into filming the airport sequence without having selected an actor for the role as of yet and only had Tom like do voice over followed by filming his shots with his mask semi-off in front of a green screen.
I kind of wish that he had a bigger role in this film, enough to warrant his own mini arc. It just seems like he was in this film for pure spectacle and just to show people that the upcoming spider-man solo film is connected to the MCU.