Nightclub City: Energy changes game drastically, good or bad?

If you play a lot of games on Facebook, you've probably already experienced the energy mechanic in games like Treasure Isle, Pirates Ahoy, It Girl, or FrontierVille. Now, Nightclub City is the latest game to join the club (pun definitely intended) and use energy as the main driving mechanic in their game. Unlike other games which have added a decorative item that uses energy (such as the coffee machines in Cafe World), Nightclub City has completely revamped the game to integrate energy into the core experience. Could this be a bad thing?

Now, all players have 20 energy to spend doing activities in their club. Almost everything costs energy, from doing bartender tricks and dedicating songs to your clubgoers. Once you run out of energy, you really can't do anything in the game. Players are already complaining about this change because it means they're now severely limited on what they can do in their club without paying money or waiting for energy to regenerate. Energy can be purchased for Facebook Credits of course, or it will naturally come back over time. One good thing is that you can now start parties instantly without needing Facebook Credits - you just use your energy.