REDSTONE LOGIC/BOOLEAN LOGIC x MODS
In a Superflat ironblock testworld, with a 75% pre-built vanilla mobfarm, automation challenge is the name of the game.
This modpack is centered around using its included tech mods W/O item, fluid, or energy transport cables. Sounds impossible but it isn't, it requires creativity to be applied to your automations. Daisy chaining Ender IO fluid tanks that pull from the previous one in the line to get a liquid from one machine to the next, or daisy chaining capacitor banks with its output modified, everything is do-able. With the "Architect" mod any redstone build or build in general is easily repeatable, and for all those people who are redstone illiterate we have a mod called "Schematica", similar to Architect but different in the fact that it can import structures into the world from files you pull from the internet. If you've put A to B that means you can import complex redstone builds and add them to your world.
Happy building everyone