See my posting about it
here (in another Juice Defender thread on this site).
As for task killing, yes, it's true that it's less needed than before, but it can still be needed. The problem is, and has always been, that if it's done recklessly, without analysis, it's worse than just doing nothing. That, sadly, is what most people don't realize they actually mean whenever they say that task killing isn't needed (or does more harm than good). Under the right circumstances, after sufficient research, task killing can, indeed be beneficial.
This app (actually, better yet,
the paid version), which is, itself, a little bit long in the tooth, nevertheless does exactly the kind of necessary analysis I'm talking about. Use it, instead of a normal task killer, and your task killing, if you do it at all, will at least be more considered and thought through.