With shadow strike, the rogue strikes at his opponent then jumps into the shadows, so if he misses he can still jump in the shadows. Maybe they will change it so it is not even required to strike any target, just like lashing blade works.
I always felt like I am helping the group in PUGs and I can certainly heal the tank from almost zero to full in a matter of seconds while he's being damaged. The fact that they don't listen to what you say is common and they will not listen until you show what happens if they don't.