Are you open to new jobs? The marriage system could be expanded a lot.
A concubine job: For those who want their waifu to have a sex job withought fucking strangers. With marriage and loyalty, charm etc. boosting the effects of the job?
Possible bonuses:
1. Reputaion increase. Possibly that race effects this. Example a Human concubine would boost rep in whimborn more than Gorn
2. A leadership role similar to Headgirl. Possibly help remove negative traits, or get new ones?
This is just one possibility. with the marriage system, a lot of new possibilities open up. which in the eyes of a management and lewd game lover who happens to be ntrphobic is desperately needed in more adult games, mod or no mod.