Following a similar generation logic as river biomes, but a road with a more consistent width instead. Ideally connecting two to three (or more) villages. Would be a neat place to have smaller structures spawn along it’s length too. It’s utility as a road for travel is clear but also there’s something rather romantic about following a road, IMO. The idea that the road leads somewhere. The idea that you can build something along this road and know it connects to something else.
On multiplayer servers I imagine you might see bases naturally clustering along them, plus provides an easy avenue for new players to travel out of spawn areas.
And have bridges or maybe a little brick road
Just had me thinking that if it ran on the same logic as river biomes, they could generate as part of the same “network” that recognised the places where they intersect, creating really nice bridges.