Allow layers in the roof to be locked or unlocked like in a composite wall so that they can be pulled back or extended from the sketched boundary. It is a pain trying to get the layers in the wall to extend to the corresponding layers in the roof and vice versa. In the example I want the insulation in the wall to meet the roof insulation. The layer is unlocked but the CLT is in the way (and I can't find a CLT cut pattern yet) so it won't move up. I could just draw some extra insulation in 2D but that's annoying. Elsewhere I drew the extra bit of insulation in 3D but had to change the profile to get the angle...super annoying and don't want to do it again. I have wasted alot of time on annoying things like this.