As of now, the best KA mining can get is a Class D. Now, given the update just dropped, not everyone has experienced the new KA system, but one thing that does irk me, just as a concept, is that mining can't even reach mediocrity without the help of Science. It's one thing to make all the high-teir upgrades a Science only thing, but to make it so that you can't reach an average is a bit much. This is less of making mining want inter-departmental relations for maximum efficiency and more of making mining become dependent on Science to do anything but be below average.