I suggest to pay fees to enable user define asset's market.
If I want to active market PAYALT/BTS, I must pay 100 BTS/ per week.
and all the fees about asset PAYALT should return a part to me, so I can use this fund to maintain the market active.
the return fees will attract more creative business based asset.
and the maintain fees will make BTS more profitable. 1 market we earn 10,000 BTS/year. 1000 market we earn 10,000,000 BTS,
maybe we can still make BTS defaltion
another reason for market maintain fees is to weed out useless asset.
another reason is because I think the market engine can't support too many market.