Just a small follow-up: In the meantime MPF 0.50 was released (and two maintenance releases 0.51 and 0.52). Soon there will be 0.53. A lot of features were added and even more bugs fixed.

A few things which came up earlier in the thread are also becoming reality:
- You can use MPF with Virtual Pinball (VPX) tables (currently only dev; soon 0.53)
- There is a proof of concept to use Unreal engine as backbox (in addition to the built-in media controller and Unity)
- A lot more hardware platforms are supported (Arduino Pinball Controller, Stern Spike Stepper, TIC Stepper Controller, StepStick and PD-LED Steppers and much more)

Documentation has been extended (http://docs.missionpinball.org/en/dev/) and we added a lot more example for common cases. Let us know if you are missing anything and keep on building!

No problem. I can write something up (since I did like 15 platforms in MPF). There are multiple ways to do that and also support external platforms which are in another python module.

How is your platform working? Which hardware/controllers are you using?