Almost all software has bugs - even Windows 3.1 died with a few unfixed bugs - back in the early 1990s. (Even CP/M, dead and mouldering, had bugs in the last release, carried over from the first release - that were never addressed.) It would appear that as time goes on, Google spends more on makeup than on what's under the hood. Lollipop has a nicer face, some really neat features - but it had a MAJOR bug at release, on the very phone it was developed on. Two updates later - 5.0.2 - and it still had the same major bug. It took until 5.1 just to fix that one bug. Lots of new features in every point release, but no bug fixes. That's what happens when Marketing tells Engineering when the update will be released, and it better be done by then. It's a good idea for bean counters, but software development just doesn't get done that way. (That's why FOSS is usually better than what you pay for. If I'm developing something for my own use, then I decide to make it open source in case others want it, I make it so it works. I don't have someone telling me when I'll be finished getting all the bugs out whether I've found them or not. Software isn't done x number of lines of code per day, it's a creative process, and sometimes takes a detour that can last for a long time - and you can't release it until that detour is completed. Or shouldn't. Marketing says "just release it whether it works or not - we'll fix it later".)
I think we'll see more of this getting even worse as time goes on. More makeup, more bugs, worse bugs and more versions retired with the bugs still unfixed. It's why I'm still running 4.4.2. I don't need the SSL/Heartbleed fix, so there's no reason for me to update to 4.4.4, except for the modem on my particular phone - which is about 2db better on 4G (and is the one I'm running).
But did Google stop to think that some of the phones this glaringly WHITE ROM is going to be installed on use Amoled screens? I doubt it. All that white costs tons of battery on an Amoled screen. Lollipop is supposed to, among other things, give us better battery life. How do they pull that off, using more current but making the battery last longer between charges? Oh, they don't. So buy some spare batteries - but you have a nicer looking user interface (if you like barf green on white, which I don't).
No updates for me unless they start allowing the software engineers to design the software again. Marketing people should do what they do best - make up stories to put in their ads. (The new one is cute. Nice job, Marketing. But please don't let that baby Orangutan develop your ROMs any more - this last one he did bears a strong resemblance to a Hoover.)