LTN is really nice, but it is "fun" (for some people, like me) to build a LTN-like network in vanilla before using LTN going forward.
Once you've "figured it out" it's much easier to drop down "smart stations" instead of building them yourself each time.
Just like I recommend players who want to do city blocks build their own blueprints instead of just loading up someone's (even if you later switch to someone's standard blueprint, you'll at least understand the why).
And of course, it's a sandbox game! You could just download a completed map, but there's no fun in that.
