I first went into Satisfactory with the same mindset: megafactory with rooms for everything, but scaling and space requirement quickly became an issue. I’ve diverged from this mindset, especially since in early game (with tiers unlocked, recipes undiscovered), refactoring the flow of production and logistics is pretty much guaranteed, which leads to undoing all of your hard work. The philosophy of wu wei applies here.
If you are in the end-game, I guess you could create a megafactory, but at that point, I think FICSIT would say that really isn’t efficient or practical and more for aesthetical reasons.
Everywhere I go, I hear kitties. This is acceptable.