One thing about the fuel highway idea: How would you get them to their locations? You would use fuel, and might have to take fuel from the tanks to refuel your ship.
I landed on the Mun on PC cheatily (infinite fuel, unbreakable struts, etc) so it wasn't my official landing. Only when I landed on it in my Enhanced Edition career mode did I make my actual first landing, so about umm, 3 years?
It's been 2 years since I've joined this forum guys! In that time, I've made friends, learnt things, and without any of you this place wouldn't be what it is today. Thank you, all of you, for being my friends on this beloved site.
Thinking of new, extra large and durable landing legs (for large ships). These could work for ships using Mk3 parts or lots of modules (like megaships)
For me (Easy to most difficult)
Kerbin
Mun
Minmus
Ike
Duna
Moho
Dres
Eeloo
Laythe
Vall
Tylo
Gilly (enjoy landing there!)
Bop
Pol
Eve (hope you packed SRBs and a ladder)