One of my players is going to play a character that has lost an arm and has it replaced with a cybernetic one. Feeling that the cybernetic arm in the core book is a bit too powerful to have from the get-go, I wanted to come up with my own version.
So far I was thinking of having the arm do +1 damage when used in a brawl, but I also wanted to have a downside to using the arm, activating when rolling 2 or 3 threats (still have to decide). This is what I came up with:
The arm becomes stuck on enough threat, having the player use a mechanics check (2 or 3 diff, not sure yet) to get it going again. Any threat rolled during this check, would upgrade the difficulty dice for using that arm again. When rolling Despair due to the upgraded difficulty, the arm would become useless and count as a critical injury that can only be healed with a mechanics check. The arm can only be used again when the crit is removed. Upgraded difficulty dice can also be removed on a succesful mechanics check.
I was also thinking of letting the player get his arm unstuck during combat, but that removing the upgraded diff or the crit can only be done during 'downtime'.
What do you guys think? Does this seem 'balanced', especially to players who do not have this kind of bonus damage? Might also be worth mentioning that the player's character is a Togruta, who already have an ability to do bonus damage when engaging a target already engaged by an ally.
Feel free to share your ideas, I'd love to hear how you would handle this.