As a SketchUp BIM app you have made a good start but there are tools and controls that are lacking that will keep me from adding this to my current workflow.
I just started exploring the application and specifically the wall tool. It needs a lot more user control to be useful for me in a commercial office. I work in a state that utilizes an IBC energy code that requires continuous insulation on the exterior side of the exterior stud sheathing of a cavity wall system. The veneer may be brick/block or it could be some type of sheathing as part of a rainscreen system. If it is sheathing there are several ways to connect the sheathing back to the structure. The studs may be wood or steel. Without that level of wall component control a generic wall that provides the user basic control of the overall thickness, and the exterior and interior face materials is needed at the very least.
What about curtain wall/storefront opening creation? The window controls do not provide the level of control needed to create these type of openings. Am I not finding the tool that provides for these typical opening configurations as I have not seen them pointed out in the tutorials?