Trains. Even if it's a short -ish distance it's still usually worth it to set up the input station so it's easier to add another field later. Plus, trains are fun. Choo choo.
... In all seriousness, looks like an interesting video!
Ok but from my really screwed up factory, I purged a giant area around the main factory. So now I need a way to defend all those areas eventually.
I think the only way that's gonna work is going to be train-to-pilpeline at some natural choke points as I start setting up an actual defense perimiter. As I don't imagine my ring of mines is actually going to do much should it come to it.
I am playing Pyanodon's and the meta is to use trains, because it's more space efficient to move a bunch of different liquids by a single rail than a ridiculous amount of parallel pipes.