http://www.cracked.com/blog/the-6-most-ominous-trends-in-video-games/ This is a good read, makes you stop and think for a moment where are we headed in this indrusty.
6 different diffuse textures with 6 of it's specs and 6 normals 18 textures total for the entire material? But there isn't an error in the material editor. Should that be ok? It's like a component can only have 3-4 textures painted per square anymore than that will crash.
Hey you can create the single patten and make the rotation before to plug it in the tile sampler (just set the pattern inputs to 6) I found a hacky way as well bu this is nor perfect: