Don't agree- Schumacher's costumes may present the correct elements of the suit, but in such a way that it loses any of its dramatic nature. The actor should use the cape and cowl to lurk and swoop like Dracula- Val Kilmer/George Clooney just stood there. Nodding. Always nodding..
Kilmer's cape looked fantastic. Always billowing, and he used it to glide and look like a bat's visual several times as I recall, most notably when he rescues Dick from the glo-stick gang.
Clooney had that shot where he attacks Freeze after ejecting from The Batmobile that was pretty "Batman", and his cape looked pretty solid at the end of the film during all the swinging, grappling, etc.