Get why you'd want bigger impact, but if its actively crippling character's combat abilities in exchange for choice of personality, personally think it's more than a little broken. Getting to choose personality might have few options at present, but now we've got even less unless we want to damage the character's combat skill. Sorry if sounds like over-pushing issue, just trying to explain thoughts.
Thanks for the tip about the effects file, will give go to try and get around issue. Probably going to end up removing the bonuses completely tbh, because not liking the system, but at least gives me that option.