But i think there is a loophole which can help a number of people.
If a person is moving from south to North etc. He can retain his old pack. If they ask him he can just say that he doesn't want to change his pack. Most probably they won't even notice that this is happening. The person only has to ask them to install his dish at his new residence. So this idea can work for those people who already have the pack they want.
For those who are buying a new TS dish and stb. They can buy it from south india and tell the customer care to activate that south pack and then they can again bring it north.