Just wanted to share that i love this idea, it brings a new fun challenge to the game. Going to try this out in my new run!
Imagine a huge single row conveyor going through a whole spaghetti base, picking up exactly the required items for an order.

Hooking it up to a requester chest might be too easy and too overpowered tho.
Or a huge mall with one market for each item produced... might also be too overpowered (Could potentially be solved by making the size of the market itself way bigger).

I'm glad you enjoy the idea I have been working on. Something like a single belt to the market was also my solution. It should give a very different looking base. While I agree that requester chests are a bit overpowered I'm not too concerned about it right now because they have low throughput and only unlock near the end of the game where you already need to have set up another solution. Once you start playing do let me know how it goes!