Inspired by posts I saw on the discord the other day, I think the leaderboards have a lot of potential to be expanded. Here are some of the ideas listed there along with some of my own:
Richest Players Leaderboard (i.e. who has the most money in the bank)
Knowledge Level Leaderboard
Top Voters Leaderboard (one you can see with a command)
Prestige Level Leaderboard (for each job)
Most Combined Prestige Levels Leaderboard (combines all prestige levels from all jobs)
Most Mutated Mobs Killed Leaderboard
A second leaderboard for cops for the number of gang NPCs killed
A leaderboard of the most-elected mayors (has this been added yet?)
I'd also really like the ability to see leaderboards from other jobs. /lb could give you the one for your job while /lb (job name) could give you the one for any job of your choice!
These are just a few ideas I thought of on the spot, but if I think of any more, I'll add them here!