I think the largest goal would have to be, to stress Pakistani and Indian relations to the point of war.
To kill a shit-ton of people.
More specifically, westerners.
Hence why they targeted the hotel, where its mostly people from the US/UK.
1. Let US know the terrorists are still around 2. Distress Pakistan & India since both are "enemies" 3. Gain attention from other "terrorists" organizations to fight back
That isnt a goal.
We are talking about political goals of the attacks.