Thanks for the info
good to know, and yea i agree, if they were really trying to increase performance they would have probably done more than just stopped the blur, as for the 'style' that is windows 8/metro Its simply a re-branding. they wanted a look that felt different from their previous, and minimalistic is 'in' right now.., though windows 8 is still far from minimal in many respects... (Though im sure most of their design decision revolved around matching "windows 8 rtm" which I dont even think shares much of the same code (though ive never really looked into it so take this with salt)