There is very limited space in the international departures area and no business class lounge (just before customs there is a VIP lounge and I guess IA/AI have access to it besides the airports authority. Even while flying *A first I did not get any lounge offer.

The new greenfield airport in BLR is probably a damper on new investments in the current airport. Unfortunately, there is a strong speculation that the new airport is now delayed by another year or two - we'll just have to wait and see.