There is a nice hidden perk once you reach "SIM millionaire" and are on discord. There are a few interesting perks actually. SIM millionaires can submit a post once a day for a chance at manual curation (quality posts usually get vote not guarantees though) as well as vote on changes and other stuff. SIM millionaires need to hold 1 million SIM for at least 30 days (it's based on 30 day rolling average. You probably already knew this but, thought I'd share anyway.