I think Tata Sky will have wider game plan, maybe they will use these gradually when additional tp required or completely migrate once current agreement for GSAT 10 , GSAT 30 expires or maybe they r planning to share infrastructure with airtel and use 2 tp's for common channels while additional ones will b used as per individual needs. 48 tps r too many and surely not more than 28 or 30 will b used at one time