Since you started teasing this tool a while ago, it's occurred to me that the old paradigm of "build-bulldoze-rebuild" really isn't ideal or sustainable for games with freeform roads. The ubiquity of the "Move-It" mods for both Cities Skylines games (as well as related things like node controller) reinforces this idea, as does my experiences with the occasional finickiness of the road tools in CS1 and SimCity 2013. It's just not a good user experience needing to completely redo something every time you want to tweak it, or when you slightly misclick, or when the auto-generated intersection turns out screwy.

100% agree. When I was building an intersection for 2 hours and then realized I needed to move something because the angle wasn't right, I almost uninstalled the game. That's why I think this is one of the most important tools in the game.

Also, when you're designing, it's like blueprinting. You need to have the tools to design quickly and efficiently. Once we get to the city builder stage, and you actually design, confirm, and build the intersection, that's when making additional changes should affect the gameplay, but not in a punishing way that requires more grind, but like paying more money to reconstruct stuff you designed wrong and it affecting your popularity as a mayor who wastes time and money redoing something they just approved. Damn I am really looking forward to the second game.

I had been curious about how you'd handle this kind of freedom in the context of the city builder, since it'd be a bit unrealistic/overpowered if you could just freely drag things around all over the place. Having a separate design stage before you confirm the final construction would make a lot sense for that, so you can get everything right and do most of the tweaking then, and of course still being able to tweak things afterwards, but at some cost..