I see DIR as the R&D of the dive world. There is not a diver in the world who would not benefit from the knowledge they are willing to depart. I am not DIR or a technical diver but have adopted some of the great ideas they dive by. It is too bad they get a bad rap.
Yes because they brought us the backplate, can light, sidemount, and CCR...
Dir is more like apple. They take proven technology and add subtle highlights that make the quality and ease of use stand out. They innovated more on the training side if anything, and required high quality from their divers.