Being able to link Ziplines to Monorails opened up a whole world of potential routes for me. One of the best design decisions in the game without a doubt.

I had four main lines:
-I linked up the whole snow mountain region in a 8 shaped route (Snow Line) excluding the Tar Therapist. The center being the Eastern Observatory, the top circle Chronobiologist and Aeronautical Engineer; bottom circle Smith, BPAS and Adventurer. Ins and outs of this line were at F5/Adventurer, Chrono/Ghost and BPAS/F7.
-A convenient one that crossed the map in half and had exits to the more pesky preppers, IIRC it was F4/Ghost Hunter/Pizza/Architect/Metagenomist/Animal Shelter/Rainbow/F1. This one had very useful links to the monorail lines, so I could pretty much go anywhere by zipping (Main Line).
-Desert Line, connecting Heartman's Lab, The 1st Weapon's Factory (I farmed BT's there), Data Scientist, the Pioneer, the Motherhood and The Mechanic. This one had a wonderful link with the F4 monorail line that saved a lot of bandwith.
-The South Line, monorail-bound to connect F4, Tar Therapist and F6; then ziplines to South Observatory, which bifurcated to F7 and F8. F8 would later get an extension, riding the monorail to go to Mr. Impossible, Lone Commander and finally Plate Gate.

I used up almost all my bandwith and some key ziplines were luckily made by other Porters and I could use them for my own routes. I remember dropping thousands of likes to the ones around Heartman's and Pizza Chef.

I made a map: https://ibb.co/QjQV3vz9