Seeing the potential of a TF2 map based on GM_Construct would be cool. Personally speaking, I think it would make for a great VSH or Arena Map rather than CTF. Oh and if you do happen to do another video on GM_Construct custom maps in the future, I highly recommend *2D Construct* which completely makes the entire game and map 2D, and my personal favourite being *GM_Combinestruct* which turns the map into a scene straight outta Half-Life 2. If I remember, most of the buildings have been decorated with Combine tech, the water has turned acidic and hazardous, and there's even a few Headcrab capsules scattered around the map. Can't recall if it has any Headcrabs in them though...
Now that you mentioned that, I really want to see how well Construct would work as VSH map, could imagine how funny it would be if Engies build on the towers. Funnily enough, I do know 2D Construct but it I just forgot about it, so maybe next time it could make an appearance. I'll check out that combine map to see how it's like
It's dark and big, that's why people fear it. Or more like used to, nowadays it's more scarier to have Gmod crash when you're trying to make a cool save.