Electro: In a movie I could see him in his original costume or the Ultimate version. would rather have his original green and yellow thunedrbolt costume. For the reboot I could see Simon Pegg perform in the Ultimate Costume. I couldn't see its being used for the movie.
His history could be edited to fit the high school scene. Maybe make him a maintenance man who gets shocked while working on a cable box. Then he causes trouble. Another idea could be all him with Shocker and make them burglars with no back story. The last idea could be to not include him at all, and when the high school reboot flops then, they can give the rights to Marvel who will make sure everything is done correctly with NO high school theme.
An interesting idea to do with him could be creating a blackout in NYC or the high school. Then Parker would have to save the city or the school by defeating Electro.
Now, how do you people think Electro should be in the movie?