Copy Pasted from the Discord
Surgery has a lot of uses like replacing blown off limbs, swapping bodies, ect. I want more robot parts. I'll just be honest, replacing flesh with metal is just my favorite things to do.
In terms of researchable limbs, organs could have replacements with upsides that make them sidegrades to every salvager walking in mid-crisis and demanding access to the surgery room to self-surgery carp organs into themselves. These organs wouldn't even need to be purely upsides. For example, we could have a heart that just produces more blood, so you passively heal from bloodloss quicker and regenerate blood faster. We could have livers that flush your system with charcoal every 15 seconds or something, meaning it would passively clean poison and chems from your system with the trade off of making medical's life a little harder if they're relying on chemicals. Alternate Legs that'd function like no-slips instead of speed being the only option, or arms that could function like more tools then just Jaws of Life.
If you wanted to lean more into the cyberware stuff, arsenal tree could have limbs that sec could print out of the secfab that give them built in weaponry (light weaponry like Mk 58 or a disabler that they enable with a button similar to borgs switching modules) to maybe a T3 tech that'd give them a built in lector or krammerer or something. Nukies could take advantage of this too by giving them options that fit the full combat theme, like a C-20R arm, or even a some sort of grenade launcher arm that you'd have to stuff grenades into manually to fire but it'd make them into impact grenades instead of timed grenades. (Or that can be loaded with China Lake rounds, thats probably more reasonable) basically trading more TC then what the weapon would cost normally for a version that you can't lose unless you lose the arm.
Also maybe a step between the basic surgery tools that medical starts with and the cool tools that science researches finally 2 hours into the round. They could be either tools that do multiple things but maybe slightly slower then the starting tools (my personal choice) or just a set of tools that works faster (boring but still better then waiting)
Watching Roboticists, CMOs, and Salvagers all self-surgery has lead me to the conclusion that self-surgery should be harder (or impossible if you hate fun)