You are able to add infill angle offsets for the internal fill pattern.
I would like this feature adding to the external one as well please as when I use the rectilinear option, I am left with tiny little holes where the filament hasn't over lapped. I know I can fix this by increasing the extrusion multiplier but an easy fix was to add 0 and 90 to the offset which would cover up the tiny holes left in the part.
I can send you an image but would need an email address to send it to as I cant upload my image on here.