13. Poly clip tool: like the clipping tool but with a polyline instead of a rectangle.
14. Walls, floor, hardscapes, roof faces, beams (maybe a new object), columns: all must have the hability of contain components. Walls components can have independent caps. Components must be elements that can be showed on sections viewports no matter the conditon: sectioning to obtain a plan, or sectioning to obtain a section. Hardscapes, floors, roofs, must have the next :
Floors and Beams: