Umph. I was about to say the idea would be idiotic, but the caveat of the stamina loss is a brilliant idea. I'd suggest that it be 2 stamina, though, considering the rate that it regens at. That would allow the rogue to move slowly in a direction, without having the ability to run 9 blocks, and only having to stop for a few seconds before continuing.
Alternatively, Fade could force a state of vanilla sneaking (or bow drawing), so the movement made would be alot less drastic.