Hmm...
I would very much like to lvl up slower, or just stop lvl:ing at all in the magical skill.
Trying to tell the story of a family that slowly gets more into magic, it is difficult when you play on the long setting and you can't stop lvl:ing if you use magic. Not all stories or fun revolve around getting better all the time. I just want my sim to be a low-lvl spellcaster and do some potions on the side.
For inspiration: Lock Skill Gain Progress - Make Sims Your Own by Triplis
https://triplis.github.io/mods/lock-skills.html