I went through and greenified pretty much all of the apps that it let me. I didn't greenify greenify, go sms (because I want to get text notifications), swiftkey (I had to re-enable it every time and that got old), 1weather (to get weather warnings) and gsam. I might just greenify gsam too. I guess it doesn't need to be running.
My main battery suck seems to be that darn location thing. NLP collector wakelock or something. I turned off location reporting and history in google and have it set for battery saving in location, plus turned off location permissions for everything but maps and weather. If that doesn't help I'll turn location totally off and just turn on gps when I need it. My battery life isn't any better than it was before installing DU and in some ways it's worse. And the phone gets really hot now when I'm using certain apps.