Here's one immediate, easy way to make Batman new again: Adam West him the fuck up. Make him an archaic, ridiculous symbol of oldschool machismo, bring back the sexy 60s-looking ladies to fawn over and/or catwoman him, give him one of his sillier opponents to fight as a B-plot with waves of implausible goons and make everything as goofy as possible. That sounds like several gallons of fun in my book. Hell, I'll just bet that Jon Hamm would jump at the chance to be Bruce Wayne for pennies on the dollar.