I was in another thread and came across a link for the chinese version of the S7 (which also uses the snapdragon) and there is a how to on unlocking the bootloader and installing a rooted rom.... I am hoping people smarter than myself in these matters might be able to benefit from the information and maybe create a bootloader unlock for the US carriers 
http://forum.xda-developers.com/s7-edge/how-to/guide-sm-g9350-s7-edge-qualcomm-sd820-t3410969
http://forum.xda-developers.com/s7-edge/how-to/guide-sm-g9350-s7-edge-qualcomm-sd820-t3410969