Finally, some non-FRR discussion. I am glad you are excited about this. I am too! I am working on the simulation environment exactly for that reason. It will give users the ability to test, and try strategies. I believe access will be limited to users who request it and are approved, but I think most people here are exactly the sort of users we want to encourage to test it out.

The API will remain the same, at least the current version (I think we will have a new version of the REST API at some point) and there will be other ways to access the backend. We are going to have the FIX gateway, and the websockets API.

The API will not be affected, because we have a "bridge" that will ensure that the backend can understand the current messages. Of course, all of this requires very rigorous testing. We are moving forward incrementally, and trying to stress test each piece, and run as many "corner cases" to try to catch as many bugs as possible before setting up the simulated environment.

So, basically, although the backend will be completely new, the frontend and the API should continue to function exactly as before. Thanks so much for your comments, I wish more people had responded to that part of my post...