Banking:
Each country should have a bank where players could deposit and withdraw money. These banks would be in only large cities.
Plus these banks pay out interest. The interest rate is set at base 10% at start of age but after every million gold deposited it drops by 0.1% to a min of 0.1%. For every deposit or withdrawal the player is taxed flat 5% of the amount. The interest is payed into your account as follows.
e.g. At D1 end suppose 5 million gold has been deposited into the country bank which means interest rate would be 9.5%. Now I have 100k gold in the bank at end of D1; I'll get 9500 gold into my account over the course of 48 ticks of D2. So I get 9500/48 = 198 gold per tick in my account.
Another thing regarding gold I wanted to suggest is the transfer of gold b/w players to help in FH.
Special Units:
Friends who've had played KnC may remember they had drummers and medics that affected leadership and healing. So I suggest adding same units like drummer/standard bearer for increasing leadership and medic/priest for healing. These units will not have evolution and be expensive like 100-150 auth each. They will also not be killed or captured or injured as they won't fight. But they'll add a whole new layer of strategy into the game imo.
These are my thought I hope you like'em. If not please don't be brutal.
