Make your production line, put stone walls around, put input chests, done there you have your factory
Yeah, you need to care about wiring, but thats like half the point of the game imo
![Razz :P](./images/smilies/icon_razz.gif)
Yeah you can't "compact" it as much maybe, but space is mostly infinite (except if you make it non-infinite)
And yeah it would enable you to make "Blueprints" and re-use stuff and such, but so would a blueprint tool for normal builds.