3DXtech is doing good work with special ABS mix filaments. Run of the mill ABS for injection molding isn't quite the same as ABS used for extrusion so there is plenty going on in the world of ABS tech. I also use ABS or ABS/Carbon Fiber for all structural components. Good stuff. PLA has its place though, not sure how Wood fill would get along with ABS, probably why you only see it in PLA.