1. Marble Mines - 300 is too low... i have to rebuild them twice a day... increase them to 700 at least
2. Gold Mines - given the cost to build one 300 is too low increase to 500
3. Offer endless marble mines for sale in the gem shop
4. Add a hospital to the game... this increases the new settler spawn rate per level + allows a doctor to be bought at the tavern to reduce recovery time by 50% for injured generals (limit 1 per account)
5. Add a harbour to the game (limit 1 per account) ... this decreases the travel time between adventures per level + allows the construction of fishing boats
6. Add a university to the game (1 per account)... this reduces building construction time per level + allows an engineer (recruited via tavern) to build bridges onto the islands