This game needs a Lifetime membership pass.
This pass should include...
1. free elevator lift pass for life.
2. Discounts on buying more energy.
3. Discounts on buying more crowns.
4. Increased energy given to players each day.
5. If you don't play the game for awhile. The energy that is given each day is stored for the next time when you play.
If you do take this into consideration. Please note and quote me. This will bring more players to the game. The players will play the game much longer each day. The players will be more willing to buy from the store more often. Last the game will have the ability to compete with other free to play MMO RPG's games on the market that also have a lifetime membership. such as star trek online and others too.
Pay to win.