a person should be more likely to convert to your religion if they are considered sinful by their religion or they are considered virtuous by your religion
pretty simple change but makes a lot of sense;
maybe +10/-10 per trait (+/-20 for very virtuous traits)
got this idea because i saw a catholic witch (witch is sinful to catholics) and thought that he should be moer likely to convert to a religion that didnt consider him a criminal, or even considered him virtuous