I HATE white backgrounds! If I'm in a dark place, I don't want to look like a lighthouse. Not to mention white is boring and uses more battery. If you are going to ruin the color scheme by having a white background, at least allow it to be customized. So we can have a dark background.
I love the fact that manufacturers are now racing to be the first one to update their phones to Android 5.0. In the past you used to have to wait months, even up to a year, to get the update, if you got it at all. By now OEM's are starting to recognize that customers want the upgrades, and are trying to get them out in a timely fashion. Indeed, they are even competing to be the first one to update all their devices. Consumers benefit from this.
I'm really upset by the loss of Lock Screen Widgets! I check the weather and my calendar using cLock (Chronus) and also have a full month view widget from Business Calendar if I swipe right. I would much rather have that option instead of just showing notifications I can get from the top anyway.