“Two wrongs don’t make a right”
The only characters I see this hurting would be new characters that start with enough bionics, otherwise it would just be more stuff you need to keep to hand. Also most bionics are internal from what I can tell so I don’t see how much use a toolbox would be for maintainence.
Now if they ever implement a limb loss + bionic/prosthetic(mutation based regrow, though that wouldn’t count here) replacement system, I could see it being a useful mechanic. I saw somewhere on here someone suggesting that bionics limbs (regular prosthetics too imo) should only be repairable to replace lost hp rather then being able to sleep it off like a flesh and blood limb and I’d be totally behind that. It could also give a much needed boost to certain mutation lines that could gain a “regrow limb trait” such as the lizard or spider lines.