This is cool, you could provide resilience to Red Engine, by providing it a backend using Flyte.org. Checkout example of making a new API on top of Flyte which has similarish feel - https://unionml.readthedocs.io/en/latest/index.html#quicksta....

Thus users could continue using RED, and if they want to scale to multiple machines or want resilience, you could allow them to switch out the backend to Flyte.

Disclosure: I am maintainer of Flyte. This is just a suggestion. Great work!