My Noobish PoV
Problem:Too many caps floating around.
Proposed Solutions:Add inflation rate
Mercenaries require pay
Cons:If you add an inflation rate you eliminate people who join mid game from being able to afford anything since they havent had the chance to build up their funds.
The Mercenaries require pay isn't such a bad idea but what happens when you can't afford it? Do they take it off your hide by killing you? Or do they just leave peacefully? In that case the flat fee to hire them needs to be much higher than the weekly/monthly payments otherwise you would hire, not pay, and repeat.
My SuggestionsLuxury Tax
Food for thought A
Food for thought B
Interest Rates
GICs
Vacation Time
Luxury Tax - Things that are luxuries; cars, and mercs, (needs a bit more definition on whats a luxury) will suffer from a weekly to monthly inflation rate of x percent.
Food for Thought A - Players will need to eat or suffer from starvation (drop in strength and endurance) how often they need to be fed should either be daily or once every 72 hours. You should not be able to die from starvation.
Food for Thought B - Slaves will need to be fed and watered this should be done through one of two methods the player could pay a weekly fee or supply the food and water himself, if he is paying a weekly fee, the fee should fall under the Luxury tax. If the slave is not fed for an extended amount of time they will die or revolt.
Interest Rates - I think interest rates should continue just not in the current fashion, they should be paid monthly and not on the same date each month otherwise a player will just sell all his items drop the caps off at the bank collect the interest rate wait the day and buy his stuff back. So there should be a formula that whatever amount the player had at the beginning of the month (subtracting all deductions from the month) is what the interest rate will pay out on.
Guaranteed Investment Certificate - Same as in real life, the bank will lock up your money for x amount of time (usually years) and pay a higher percentage of interest based on how long you lock it up. I think this is something that could be implemented for 4-6-8 month spans at a higher percentage of the interest rate would be for those times.
Vacation Time: If the food for thought ideas get implemented so should vacation time, meaning that if you activate vacation time there will be a; 24 hour period where you cannot log into your account (to prevent abuse) your character will not have to eat, the bank will not pay interest while you are on vacation time, your mercenaries and slaves do not require food or payment.
Let me know what you guys think, and try to be polite about it :p