Everyone's going to hate me for this.
Now that we have contracts it might be a good idea to turn ways of gaining money into ways of losing money, for example it's common for MMORPGs to feature a casino with prizes which are typically special cosmetic items that cannot be obtained any other way. This is for late game players who are quite wealthy and don't really have anything to spend that wealth on, giving them a hole to dump money into with the consolation that they'll get some of it back as tokens which they can exchange for those prizes. Of course for this to function in that role Cazino Paradize would need to be updated so that the games can't be cheated through skill or save scumming, so players actually have to lose money (lots of money) to get those prizes.
Likewise the stock market should fluctuate much less (<5% per day), stocks should stay fairly high in value (>$1000/share) so playing the stock market is a fairly rich person's game, and there should be a limit on how long the player can own a particular stock so they can't just buy low and sit on it until the numbers turn green, there's actually a possibility of losing money. The in-game lore justification for this is that Anon isn't trading stocks, he's shorting them.
The point of these changes is to give players a reason to engage with the contracts mechanic, I'm personally guilty of using the slot machine as a money printer and dumping my ill-gotten millions into a stock that's under $10 and taking out 10-20x as much which of course completely undermines the game's plot and theme.