^ I personally don’t need this. It is just a question that is repeated over and over again. I feel like something needs to be offered so it will stop being asked.
For what it’s worth, any time I needed to overlay, say a dirt road, I would often use decals. If it was a track layout, something I did like a Mario Kart clone, I just modeled 7 track segments that pretty much covered every need and then just re-skinned them per level.
I have used spline systems for roads and rivers in Hero Engine and Cry Engine so I know that it works well for what most need it for. But in staying with the “Everything needs to be super easy for everyone”, I think I would be interested in how Epic approaches this.