I do agree about the UI changes, mostly I worry about compromising changes rather than design changes. I think the criticism on the memory problem is a bit unfair, the change of Qt was unavoidable, I am glad they did try and make the phone more efficient, tablet and newer models will benefit from that. Yes they are stuck with 1GB RAM and a hw that will soon get 2 years old. Sony just hides the problem by introducing new models every 6 months making older devices obsolete.