I actually had thought about this in great detail before, but eventually given up on it.
While the idea seems fun at first, it could lead to further unbalanced an already unbalanced endgame, and furthermore it would only be achievable to dedicated players who invest a lot into the game.
My base idea for this happened a number of months ago when I started thinking about the possibility of increasing a character’s strength through conventional means.
With the addition of “Gym” as a building in the game, the player could [a]ctivate the immensely heavy weight sets in the building and over time, gain the Strong (+1) trait, and eventually max out at the Extremely Strong (+4) trait.
Players with enough metal and a solid forge in their base could craft a weight set out of parts.
This could be sped along with the consumption of protein (via protein powder), and through a new kind of drug, anabolic steroids (which could lower health and give characters the Bad Temper trait as well as increasing strength when taken with exercise).
Furthermore, the player could [a]ctivate treadmills in the building, and through regular use, increase their running speed over time.
Players with a high enough electronics skill and a lot of spare parts could craft this in their own base.