Most LPS will benefit from extra feedings, mostly by growing faster.
That said, be aware that the extra feedings will add nutrients to your systems, so don't go overboard or you will see a bloom of algae/cyno/etc.
But it is really cool to see them feed. When I feed my fish frozen food (like mysis and cyclopeeze, oyster eggs, etc), I tend to target some food (with a turkey baster) towards my LPS, gorgonians, etc.