I'm seeing similar results as you, with same core issues. In my case, it seems my battery is draining quicker than what you guys have stated, with my battery going 55% down to 7% in just two hours. Also, not sure if anyone else noticed this, but I had to cycle my wifi when I opened the lid before I was able to get any internet.
I'll attach my full log in case anyone wants to look at 2 hours of the problem via console logs – https://www.dropbox.com/s/5je5ciyw9eaeskk/Should%20be%20Sleeping.log?dl=0
Has anyone tried to force sleep from the apple menu?
I did try this, and it appears to work for at least 3 minutes, but I didn't test it much longer than that. I will take into advisement the workaround of turning off Wifi, for now.
System Overview:
OS X El Capitan
Version 10.11
MacBook Pro (Retina, 15-inch, Mid 2015)
Processor 2.8 GHz Intel Core i7
Memory 16 GB 1600 MHz DDR3
Graphics AMD Radeon R9 M370X 2048 MB