Throughout most other online mafia platforms, there are such things as "role modifiers" that do exactly that and modify the role.

Common modifiers:

• Compulsive: cannot NA their night action
• Novice: cannot use their action N1/D1
• X-shot: can only use their ability a set number of times
• Vengeful: can kill a person of their choice upon death
• Macho: cannot be protected from kills

The problem with EM is that if people want to add some sort of tweak to roles in their setup, the mods basically have to make a brand new role. Adding the ability to add modifiers to roles when making a setup would be nice. It would definitely cause more interesting setups to be made. A good example of one such setup would be Bird7 on Mafiascum. https://wiki.mafiascum.net/index.php?title=Bird_7P

you can read more about modifiers here: https://wiki.mafiascum.net/index.php?title=Category:Role_Modifiers

:^)