What can they possibly do apart from making the city enormous? That you can go in every building, or the city builds new areas over time, or other player's live in your city too?
It'll take a while to settle into the market and for Sony to respond to the inbuilt limitations in their marketing strategies etc. Until then, I'll watch with interest.
Romney's going to fund a dating-sim called "Mormon Effect 2", where you marry as many wives as you can, and as 'Shepherd', you convert as many unbelievers to your flock.
It's also a finance sim, where your income and expenditure are reviewed by a vast, online community.
If the game is good, the setting is even less than secondary. Make the controls and mechanics good enough and you could set it in the Cola Wars, for chrissakes.
PS Vita buyers aren't necessarily console buyers, and neither are they content with 90's RPG titles. The mobile platform has quantity of games, but not the quality - dedicated systems tend to have dedicated games (that then appear on phones years later).
The problem the author describes is due to the ever-increasing complexity of the AI used in games. More complex AI means more variables that need changing this or that way in order to scale difficulty evenly.
It's very simple to make Pacman scale its difficulty evenly because there are only a few variables to change (the ghost speed, the abundance of invicible pellets, and so on), but when you have a modern game, with a million different classes, objects, behaviors, some of the co-dependant, it becomes a huge mathematical problem.
People that want the extra detail, better AI, better 'realism' cannot have evenly scaling difficulty anymore.