Yeah I was wondering what you were going to do about that. 3D tools are always good to have for better construction.
Though that really didn't stop TJB. His compo entry looks like Source2 when it's in all white. I can't comprehend this. But if this level of stuff could be done comfortably with just the right tools, then Goldsource and source would remain relevant even longer. I think it was mentioned that the Goldsource fluidity or flow or something was and enjoyable thing. A good editor helps with that too.
Personally, mapping for source is a massive kick in nuts with all of it's complexities. It's just not enjoyable to me and I can't seem to get anything to look authentic :/