Yeah, some of the USB3 headers are kind of fragile, and the plug is bulky. It's not a good design. The header for 3.1/C is much better, but my new high end build is the first time I've even seen it on a board.
Also holy shit I'm glad I built this new machine. My work is really disk IO limited. Traditionally we have an SSD or RAID for the OS, a second one for scratch / db and a hard drive for drive images. I threw everything on a single NVME 960 Pro SSD and reprocessed a job from last week. The first time took 8.5 hours to process and 9 to index. This time took 11 minutes to process and 2 hours to index.