Regarding the power-savings mode selection issue, that is most definitely not a part of stock Android. Google releases Android without any OEM or carrier modifications. If the OEMs/carriers decide to do something, Google is (generally) not involved.
In any case, it's just one of many examples where I feel Android requires more maintenance than iOS. Which is perfectly great for those who want something to tweak and play with.
Once again, this is not part of stock Android, it's part of "stock Android + some modifications Sony made." There's a big difference.
I've seriously considered a Galaxy Note 2, but TouchWiz's existence offends me. :) If there was a decent stock-ish build that supported the pen I'd be all over that.