The CW brings a pair of heroines with long literary traditions behind them to its already superhero heavy lineup. But beyond the curiosity raised by the builtin names Batwoman and Nancy Drew yield the sort of cookie cutter results unlikely to light up the night sky. As the first show to film a lesbian superhero as its lead bathroom and adds social significance to its utility belt that milestone achieved, the series dutifully follows the template of its DCCW brethren, but with its drama limited by its taciturn protagonist in an initially uninspired supporting cast