Hunters are amazing for killing both the templar and atheon legit. They are also adept at finding their way throught he labyrinth without detection. So they are helpful basically 95% of the raid at full throttle. Now defending confluxes and sync plates are questionable mainly because your skill level as a hunter takes a role in your lightweight stature. But destroying oracles in the vault and in the Templars cave are quite easy for hunters and make them very useful.