content: I intend to only make the metal case and install screen + some rudimentary peripherals. The customer then buys and installs their own motherboard and processor. Just like building your own desktop PC, only this one is a laptop.  I don't produce or supply chips, so I can't help with binary blobs or backdoored chips.  You will have whatever  you choose to install in your laptop case. Some will want completely open base, others will want powerful graphics with proprietary blobs. The only way to satisfy both demands is to leave the decision to the customer and not try to make their decision for them.  Naturally if an open chip (RiscV or OpenRISC etc.) comes to market in the future you can buy and install it in your laptop.