What is advantage of lollipop over 4.4

[AC Question]

specially on a Samsung S4

 

[AwesomeIndustries]

In my case its eating my battery 4x faster in S3 (I'm using Cyanogen Mod), so if you're fan of cables you will love it It looks cleaner and smoother, but currently I'm going back to 4.4.
Good question, though. Maybe I'm missing something important.