Suggest frames to exclude from a stack.

Sometime a stack looks better if you exclude frames that are strongly misaligned from the rest. It would be great if the app could suggest specific frames that, if removed, might produce a better result. Either because they have a lot of movement relative to their adjacent images, or maybe the lighting is different than others in the stack, or even that there is nothing in-focus (thus they are "wasted). And give an easy way to take the suggestion and restack.