To be honest I'm not sure you really get it. Bungie is really only left with a few options without micro transactions... 1. They leave everything the same. No new content for several months, and that content is severely over priced in order to try and recomp the fiscal investment that was put into said lack - luster DLC, see The Dark Below and House of Wolves... 2. Introduce a monthly Subscription Fee. Coming in at the normal $15 a month, forcing players to, in all likelyness, pick between a free to play model, where they are locked out of the vast majority of content or to pay a subscription in order to gain full access. And finally option 3. Cut they're losses... simply let the game run dry until the release of Destiny 2, where you hope to retain the Hardcore fans and hopefully grab the attention of new gamers and start from scratch... which means returning Guardians would most likely have to start from scratch as well, seeing as there would be nor Eason to allow them to carry over their toons.