Can the Supreme Court justly take or refuse cases with this work load?

It is hard not to see it as a moral duty on  Supreme Court Judges , being the final point for decisions on all complaints, to let Congress and even state legislators know if there are cases they are refusing despite deserving to be taken because of the load of work they have. With a load of work from all states and federal courts it is hard to see how the situation could be otherwise. The court can do that directly or indirectly by stating that as the reason for not taking a case whenever it applies so that Congress and other legislators can carry their duties based on such feedback. 

At least for federal courts the Constitution gave Congress the power to put as many intermediate courts as needed before reaching the Supreme one. More levels of intermediate courts would increase the chance for sufficiently handling more cases.The Supreme Court shouldn't support keeping such deficiency in the judicial system by abstaining from giving a required feedback in that regard. One could also say that being the final point for the judiciary system also puts the court in the position of monitoring the performance of that system in applying justice and through that apply the moral responsibility of such position on the court  .