There has been a great deal of movement (to and fro) on finally delegating 'spheres of influence' so to speak. One thing that IA has pushed for and won acceptance of the idea of an Organic Rotorcraft Air Attack Fleet. But the contours have not been fixed yet. There is also a line of thought that is pushing for setting up an Air Assault Force like the Americans. But there is still no clarity whether it will be Army centric or Joint Command.
Well, there may be something along the lines of Joint Force Harrier.. but that is still more understandable as fixed wing assets are shared. Here, the Rotor craft is essentially limited in its employment on a tactical level(leaving aside instances such as the desert storm radar raid) and should therefore remain with the force commander of the region. i.e the packaged force should exist specifically with the Corps commander or otherwise.