I think the universal format is problematic because the camera companies have their own IP with respect to compressing/packing those files as fast as possible already. I suspect, for instance, that Sony’s compressed raw format is compressed in real-time via FPGA type code and not by a microprocessor. Actually I believe this data is packed on the image sensor before transmitting to the image processor. Anyway these guys are pushing tremendous amounts of data and they have their own tricks to process images quickly and get them written to the card.