There is an v8 https://factorioprints.com/view/-N1Fjabs3MgcG7obW_E_
After some tries to explain the outpost system i made in 0.16 i was glad that in 0.17 the settings per train were blueprintable.
i now had some time to made a fue changes and made a new blueprint book.
This book with all the modules in it so u can make your own design and play with it.
(Pre made stations with settings are here https://factorioprints.com/view/-LcSvD4OuMIHhnoh67N4)
design your own train setup Step 1 start with the station. Step 2 put down some rails for the train length ( because of the grid shifts only the station has track in the blueprint) Step 3 Number of engines/ loco's ( first one is with the station Step 4 number of wagons. 1st IS the bot wagon, middle IS the trash wagon, last can be the fuel wagon. SO minimum 3 but 5,7,9,11 .etc. Step 5 add same number of loco at the end ( same direction no reversing !!)
Base is finished and ready for setup with constant combinators and Filter the wagons and keep last slot open !!
Repeat these steps for the Outpost BARE and Outpost FULL setup the amount of bots requested and minimum free and Max free as well. Choose the required items to be delivered ( 1 with stack bonus will possible pull out 12 above 15 it will be put in the trash in this case) Keep expensive items ( like reactors) in the train. And deliver the rest in small amount. When used or requested by player the train will add automatically.
After setup make blueprint off result and go make an Outpost
After this you can plop down any blueprint as long as the items are available in the train. The station will add bots if needed. When the bots are not needed ( build is finished) the system will also reduce the bots for you.
The fuel car and the fuel for the train it self will use the best fuel available in the system. When for some reason that fuel has run out. Both will switch back to a lower tier.
Also all normally used items are delivered to all Outposts. As soon you are in range of the bots and you low on belts. They will deliver the amount available in the Outpost and the train if available will come and top the Outpost off. If you're still there it will try like normal full fill all your needs
It is not needed for the expensive items (like reactors and so) to be unloaded in all Outposts but it's possible to put them on the train for when you need them
In the bigger train setups I included also the ingredients for artillery shells. They stack better then the shells themselves.
a video showing it in action ( using version 4)