While I personally hate Tron, and the thought of having a better version of it in the Modern format makes me recoil in horror, Tron isn't all that good in Modern at the moment, and there is plenty of hate for non-basic lands
Supporter cards offer powerful one-time effects that can dramatically impact the game
Another nice thing to do against control decks is CAREFULLY using your removal (Magma Spray, Abrade and Lightning Strike) on your own creatures to prevent the opponent recovering HP with Moment of Craving
What shield counters do better is giving your opponents other options if they dont have edicts, -X/-X, or damage cant be prevented effects
Also mentioned in the Pokemon TCG Pocket statement were details on the new trading feature coming to the game, something which will surely be utilized by fans as they seek to complete their collection with the addition of this new expansion (read more about trading in Pokemon TCG Pocket here)