Where's the Learning Curve improvements?
As we increase the level of various production functions; mills, blacksmiths etc there should be learning curve improvements reflected in the throughput time or in a reduction in the cost to increase levels.
i.e. there should be some incentive to increasing productivity while maintaining building licenses other then just sheer linear volume.
The challenge is missing and the player is not bonding any deeper. Contrary the player has to fight boredom and walking away and just letting things happen over time. This is not a winning combination for anyone.
Most of the enjoyment is from the interactions between players on chat. - not with the game.