Are you afraid of tropes?

I have a thing I've been working on, and all the way through I've thought the framing device that wpould really work would be the debriefing flashback. But I know that's been done a lot, which might be the reason I'm drawn to it. When you have an idea that seems to fit within a certain mold, do you just go with it and assume the writing will carry through the familiar setting, or you can remove it in editing, or do you run away from it all together?