Technically, blur is only necessary to some, hence people running liberty... But for me as I have stated in other posts, the necessary blur would be the dialer, gallery, & camera cuz they have more & extra functionality than stock. Some people like the facebook syncing or whatever. Then there are the apps not able to be replaced from mkt that were removed from the APOS like roms: like audio effect settings, arc video & image editing, dlna & hdmi functionality.
It's basically akin to what sony did with the ps3 when they disabled the use of the other os... & I will not further a cause that dumbs down the functionality of a device. -1 for reverse engineering retardation back into a product.
from my DX