Hiya,
Mostly the issue you are seeing is ME's crappy shadow engine. To remove the blotchy-ness, if you have installed the mod normally with the installer, remember to clear you shader cache, see the OP for specific instructions. That will remove the grainy shadow filter and load the shader cache I included iwth the installer which imitates ME2 shadow engine (to a point).
The shininess is actually greatly toned down in this latest version, but in some lighting it's unavoidable even with vanilla textures (I think). Also any injector can increase the shininess: enb, sweetfx, and fxaa if you add any additional contrast, bloom, or HDR.
I'll look more into signs on the Citadel, in my own observations I have seen they are blurry on one side and then when they flip become more clear, but I never intended to mod any of those files, but a few may have snuck in there if I mistook them for lightmaps which I applied a heavy blur filter on to remove the pixelation.