Game Input MultipleXer

How much logitech ffb (and other protocols) differ from fanatecs?
Now that we have fully compatible pc/ps4/xbone wheel how far fetched is to emulate older wheels with the idea of getting all the extra features (motors etc)?

I suspect the main problem is getting all the information?

I can't say, I don't know much about other protocols.
Logitech has published his protocol, it was a really helpful.

Is someone working on a firmware for the official fanatec ps4 base? i have an fanatec wheel and it would be nice to test if that would be a better combo than g29ps4 firmware?