"What are we so scared of?"
It's not an easy question to answer. Last June Gawker wrote about the leaked emails between Sony and Marvel which outlined the character traits Spider-Man would have. One thing was very clear: neither company would approve of a nonwhite Peter Parker, nor would they green light a homosexual version of the character. Taking that into consideration, it's unlikely that they'd agree to a pansexual version either.
"We're scared of things that aren't us,"
"Not limited in sexual choice with regard to biological sex, gender, or gender identity."
It's amazing to hear this kind of positive news from one of the actors, but the leaked emails indicate that this kind of discussion just isn't happening among the people who are actually empowered to make these kinds of decisions.
So, just what ARE we so scared of?
At this point, it seems like people will see a Spider-Man movie no matter what. That's not a bad thing! The character is incredible, and the story about redemption and responsibility is one that so many people can relate to. Does it really matter if the person behind the mask doesn't look like the Peter Parker we're used to?