I apologize if this tactic has already been discussed but i didn't see it in any Ravyn topic.
While assembling my Storm Fall at the LGS I was discussing retribution tactics with a fellow ret player. His favorite was Ravyn but I never really saw a use for her. However, he convinced me to try her with this theory in mind -- Ravyn, nor Vortex, is the finisher. He reminded me that HG Riflemen can CRA engaged targets, and with Vortex up that's a boosted DMG roll. On her feat or withint 8", its boosted to hit as well, alleviating the -4 penalty.
It all sounded like an interesting and fun tactic, so i tried it. It works surprisingly well and adds a new angle to Revyn few will expect. I was able to kill a beast in one turn with it.