It's interestkng actually. The way Valve implemented OpenGL was actually a DirectX emulator in the core. The graphics engine calls DX methods, but those get captured and translated on the fly to OpenGL.
It's still a sports car. It's not like it's a ****ing Mercedes SUV or some other trophy wife vehicle. Of all the cars to get annoyed over AC adding, a SLS is not one of those.
Well, now that LFS has moved to DX9 as well, XInput could be nice for those that use Xbox controllers for LFS. XInput (instead of DirectInput) for compatible controllers allows for split triggers along with more precise stick movements.