Phoenix are worthless against Broodlings

Hey guys! i think that there should be an option to stop the Graviton skill of Phoenix, or somehow make them prioritize on air units first, cause now they just sit and pick up the little lings from the ground, and that makes them completely worthless against any air units. I think Protos are very lame at air units, sooo perhaps this would improove things a little. Thank u!
GG!