I dont think the game needs anything. The formula is already perfect and it allows for people with busy officework 14 hours a day and five kids at home to relax for 30 minutes every week.
Only thing Id want is the subscription price to rise so I could give them more money. I hope we get more mogstation stuff too. All the mounts, pets and cute glams. That would be so cool. Like 5-25 dollars a pop. Id even pay 60 for a really good mount.