I am not sure it is something they're considering adding. I thought that was actually a deliberate decision made by SD? I heard someone say that SD didn't want to compete in the IFR space. (Bobby please correct me if I am wrong)
Autorouter.eu is my poison of choice for finding IFR routes. It is free and quite quick! As I only have an IMC rating however, I would need to file by hand to ensure that I don't enter controlled airspace on my route.