The first contribution I want to make to the lemmy backend is a word filter. It would kind of be like the slur filter, but it would let you turn it into any other word you want instead of removed . I feel like a lot of fun could be had with that.
Fark has been doing that for almost 25 years (e.g. every instance of the N-word becomes "attractive and successful African-American") and I'd be lying if I said nobody had a problem with it, but people who see fit to challenge it tend to give up very quickly.