One of the fallen legends of the game :
The buildings update is important from the perspective of reducing mb and sports shop for those that don't like them as people have more decisions on what to spend their money on.
And on that point I think that Sweet Nitro are missing a huge trick by updating one level at a time. If they were to give us a minimum of 3 additional levels in the next update it would keep the sim city players happy, the strategy players would have to decide the priority of their buildings, strategy, money, fans, etc., MB and Sport shop spending would be reduced and Sweet Nitro would probably earn more money from the real world big spenders in their rush to be first to finish. Everybody would win (but get the custom play update out first).