You should be able to modify the slug in the hook 'filter:category.update' Which is where the slug is set.
https://github.com/NodeBB/NodeBB/blob/c9f285a883104cb87802fae8c5d321dea8154680/src/categories/update.js#L32-L36
@julian said:
We're looking to expand how the reputation system is currently used -- upvotes is one way, but hopefully we'll add other methods as well.
seems good!
N
