I started work on an automod a year or so ago, and there was no real interest in it. Tbh, I think lemmy is far too small to really benefit from an advanced automod.
Remember, all of lemmy together is smaller than the Crackberry forum or the LTT forum. It's smaller than many city subreddits.
That means the time investment of setting up and tuning an automod bot and the trouble caused by false automod actions probably isn't worth the time saved by the automod's correct actions.
Is that a challenge?