Pay to win, it's an argument that has been hashed out many times before, despite us all wanting to support BI, players who have payed more for the game should not have an advantage over players who have not (better weapons etc). Popups will become extremely annoying, trying to annoy your customers into buying something is a big flaw. Many games have tried different methods and the only method that works so far is cosmetic upgrades. People don't like paying twice (or more) for the same thing (with patchs). It's a harsh market out there but BI will feel the burn if it tries to force paid DLC. It's like the whole Xbox/PS4 thing all over.