Exactly. The current kernel is based on 3.4.5 which does not really step between both the quads efficiently which cause more battery drain instead. This should be fixed in next patches and I am sure Samsung is working on that. Linux Kernel 3.8 fixes this issue. If developers compile kernels with 3.8+ sources (or Linaro builds) phone will definitely be lag free and more battery efficient.. Being a new processor in market, this is definitely the thing that would have surely happened. They wanted to release the phone earlier because of the competition (Xperia Z and HTC One) hence they released phone with lower level kernel that actually does not support big.little stepping. As far as I know Samsung's strategy, since they have achieved what they wanted (sold like millions of devices
). They will concentrate on performance optimization. Kernel 3.8 and 3.9 sources are already out so they have all the ingredients. What they need is put some manpower and release an update that contains one of these kernels.
About TouchWiz color thing.. You will find it funny but for Eclair 2.1, Froyo and Gingerbread, they had blue color theme while AOSP had green. After ICS, they changed it to green and AOSP changed color to blue
. It always has been like this
I also find icons cartonish but they are much better than what we had with TouchWiz 3.0 and less.