If you’re still interested and/or working on this, there’s someone who’s got a larger distance in their mod but it might be worth seeing if they’d like to collab with you.
This mod significantly expands on the (already quite interesting) weight gain content of Crusader Kings 3 to create a truly immersive strategy/RPG weight gain experience. I tried to integrate new features as smoothly as possible, to allow for fun and long playthroughs that don’t solely rely on instant gratification.
Features:
A fully functional height and weight system. Weight and height are shown in the UI. Both imperial units (lbs and inches) and metric units (kg and cm) are supported.
Trai…
Edit: they’re even asking for help with the scenario writing.
Yeah, that’s right. If you can add new fantasy races like orcs or even dragons into the game, surely you can create more realistic fat people with cellulite and no clothes clipping. But, unfortunately, there are not a lot of modelers in the modding community currently. Probably because there was no need for them in games like CK2 and EU4 (aside from the units). Mange is basically the most prominent one, and he has a lot of stuff to do. I myself don’t really have any experience with modelling, so…