Maybe this doesn't really go in this thread but, I am having a terrible time trying to work with the slope or triangle pieces to sheath an irregular shape. (A boat hull.) I don't know why I fixate on trying make the construction of things like they are in the real world, but that's just how my brain works. If I could get the slope pieces to attach on the long (angled) sides I think it would work, but I just can't. Grr. That and the rotation system Local? World? Default?--whatever that is--as it seems to be behave differently for every piece. The building system has gotten so complex as to be just very difficult to figure out anything that isn't straight blocks at default size. And I am sure that's why most people build minecraft style.
I'm not suggesting changing the building system as It does work very well for most things. I'm just ranting. Though there is something that maybe impossible to deliver but would rock my world: Bezier curves and movable/customizable points. That is, like the surface edit mode but where you could select a point on any side of the block/piece and pull/push it into a different position so that you can effectively make a custom shape to fit your needs. And if customizable Bezier curves were a thing you could manipulate the curves of a piece as well. Like I said, probably impossible, but just imagine!