It is definitely doable and I would encourage someone to try. Especially if you're a player with some experience with 5 string layout. Would simply require widening the neck (plus duplicating holes of course) and adjusting the body mount to accommodate it. Electronics for that would be a question I don't have the answer to yet.
Knowledge of 3D modelling or the interest in learning would be key of course. I mostly use the free version of SketchUp which isn't the best but it works. I'd love to attempt it but don't have the time at the moment. Let me know if you or someone attempts it. Curious.