Any plans for separate researches for just the surgeries (compared to the full research to also manufacture the items), or for lowering the requirements down the existing researches?

Right now, the surgeries for the items in this mod appear to be locked behind the research that lets you build those items, so if you get a cool item from a quest (like an advanced bionic spine), or trade for it, you can't install it until you've researched enough to just build one yourself. There's still the material costs to overcome, but it reduces the excitement of making a good trade, or getting a good quest reward.