No, I really don't. DC/WB should shift their focus to fixing what is broken.
I'm all for independent films on various characters, but what does a film about the Joker actually provide? Where's it leading? What's the grand purpose of it? If there's sequels, where are they headed? What about Batman (a strong character in the Joker mythos)?
This Joker project is, quite frankly, a joke (pun not intended). It's similar in mindset to how Joss wanted a Batgirl film so one was given the go-ahead or whatever. Thankfully that never came to pass. Someone obviously just wanted to do a Joker film and DC/WB just said "sure, nothing else we've got is working at the moment, so why not?"
No thanks!