Few points:
Army aviation wings has to be added or strengthen according to army doctrine not out of some fancy compulsion of doing certain things to copy others.
Simple solution is; ask the army. In my understanding their is benign/lay-back approach which has been contagious and circulating back and forth between both bureaucracy and Army. When one is fast other is slow vice a versa. So they both are to be blamed as far as upgrading and procurement is concern.
Looking at India's defensive posturing against its two immediate enemies IAF as a dedicated entity same as Navy is a better option. India is not a war making state who requires hyper Interoperability and moving of logistics in a massive and faster speeds.
The Indian politics who controls all three branches and enjoys obedience still suffers from phobia of losing the control of such important Power. So they like these to be scattered entities.
Last but not least the whole debate of having a super unified command come in main discourse usually when polity is weak, clueless or allegedly complicit in making decision from raising war, coordinating anti terror operations to even sanctioning new shoes for infantry, etc.
If the leadership is assertive, can make fast decisions or preempt certain fast tactical or strategic maneuvering than these issue doesn't arose. We have adequate resources and means to run our functions and coordinate.
I am ending mt rave by saying we need to analyse things from our perspective, our own circumstances and conditions.
Of course there are always areas to improve and that gives us all the reason to think and deliberate. There is no harm in thinking.