One thing I would like to see, since many months, is a benchmarks of different USB 3 controller, to compare the quality of their drivers (and hardware), under different kernel and also under Windows.
I would like to see usb3 comparison of Intel 7 chipset, AMD Hudson chipset (those chipsets for FM1 socket or FM2 if possible) and any other external usb3 chip. usb3 in AMD Hudson was first usb3 in chipset worldwide (xHCI 0.96 prerelease version of the controller). Intel implemented it now (xHCI version 1.0). It may be interesting how much usb3 improved since first production release 0.96 to final production release 1.0. I'm curious if AMD will update its chipsets to 1.0 release or will remain at 0.96 specification.