BTW, few weeks ago I submitted a PR to Proton's Wine repository, which enables the hidraw backend for Simucube steering wheels and Fanatec pedals. It would fix this issue as well. If you have some time, you can look at it.
Yes that's probably something we can have in Proton, it looks good and I'll merge it. It will be in next Experimental release.
Fwiw I'm considering having a similar mechanism as Proton does for upstream, with some default backend depending on the device, as we've got more and more devices working best with `hidraw`. Though I still haven't figured how to do that cleanly yet.