I'm also too lazy to set up really intricate contraptions so I just grab other people's blueprints and I glue everything together. That's basically what I do at my day job and my title has "engineer" in it so I'm just going to keep on pretending.
1) learning the game, making spaghetti
2) pulling in other blueprints, reaching the end game
3) creating your own blueprints, reaching the mountains of madness
I also highly recommend playing with a non-engineer friend. It’s an interesting way to watch someone gradually develop an intuition for abstractions and service-oriented design.
I submit that with more useable balancers, importable blueprints never would have made it into the base game.