Oh yes, I'm well aware of this. I wouldn't still be using GIMP after 10 years if I wasn't a patient person. :)
Though I fiddled with an example file for ~5 minutes and it crashed twice in that timespan. Exactly like the last time I tried FreeCAD a few years ago. But I would really like to move on from F360 so I will try to give it more of a chance this time, and hopefully I'll find the time to contribute something.
Start to use it today, use extensions like Assembly2/3 to compensate for missing features and do your best to help out if that is not enough. Or have patience :)