Never seen the underbelly of a flying Babur, the window might be covered for the static display missile.
I do agree, but the GNSS was introduced on Babur much later. DSMAC was primarily to be used for way-point navigation and target verification. Isn't that TERCOM what you're referring to?
The cost difference is relatively small and quite affordable.
Agreed.
For target recognition.
Agreed but it is a strategic weapon for now, doesn't matters much.
I believe multiple navigation systems were used to increase redundancy.
I hope I didn't commit blasphemy.