Sorry if this has already beed asked, didnt see it.
My biggest concern right now are about LODs. Farlod, lod and immediate surroundings need to blend... Skyrim LOD is so meh... any word of that?
My point is: Im not worried only with 2k x 4k x 8k textures atm, because good LOD transitions are needed for HD gameplay, dont want just HD painting for screenshots.