Instead of T-Mobile maybe it would be Dish-Mobile. Receive satellite/cellular, transmit cellular. They can do triple-play sat, broadband, phone. The extra money injected into the company could be used to do more build-outs. The internet of things need cell service in many cases. Cars will all be cell connected in the near future.
They might be able to offer one broadband package giving you satellite broadband at your house and through your cellular devices when you get their service away from home under the same data plan. Phone service could also work through satellites when you cannot get the T-Mobile cell signals. Sling could be done through the cell towers to your devices as well.
I can see them trying to gobble up smaller providers in the process to become the size of Sprint or larger.