Storage space does matter. It always has. When I was having trouble with the performance of my Note 3 some weeks ago, one of the first things the tech team did was ask me to toggle over to storage and tell them how much space I had available. But that's elemental stuff that is not new. As far as reloading is concerned, part of that is up to the user. I purposefully turn off 'refresh in background' on most of my apps (except weather and a few others) in order to conserve battery. If you have your apps typically refreshing in the background that may have an impact. But that's going to be true for any operating system. And the impact is just not handled by memory but by CPU. The next iteration of the 6 plus will have a faster processor. It will be interesting to see what impact that has on battery life should that remained unchanged (as I suspect as the trend is for batteries to get smaller if anything).