If we have a Sims 5, should they add neighborhoods with no roads?

If I recall correctly, in TS3 it is possible to place lots not connected to roads (sims walk to them) and there's CaW so theoretically it is possible and had already been done so why not in TS5. Out of premade worlds I think TS3's Dragon Valley (from store) doesn't have car roads. One enhancement to that system that I can imagine is that bikes also needed some kind of roads to work though IRL it's not necessary. Overall, I think TS5 having some sort of Create-a-World would resolve a lot of issues.