I forgot about that. I spend most of the time in Part Design workbench and i have custom toolbar to add some features from other workbenches but now when ruled surface got the direction support now i will probably be in Part workbench more often and my custom toolbar will get new member.It is not implemented in the Part Design Chamfer/Fillet, but it is in the Part Chamfer/Fillet tools. The Part tools work differently and they nest their parent under them, so it's a matter of preference.
About regular users testing dev branches... probably if there would be a branch all developers would feel comfortable committing to without much testing (not master) and that would be build and available on something like PPA for Ubuntu. This could work in my opinion everything else that assumes regular user has some degree of knowledge needed to build/run/test/report/... doesn’t have much chance in my opinion.
For example testing current render/drawing/assembly/part/arch... well i can test and report what is available on daily PPA and that is about it. About drawing workbench stuff that is not available on daily PPA i can only read about it for now:
http://freecadamusements.blogspot.co.uk ... ional.html