Not a fan at all guys, I think this idea is badly thought out, As others have said one of the key things about the HIVE engine ecosystem is that has almost 0 Gas fees, This is simply like adding back a downside to your system. I think a deeper look at what causes the millions of listings and the constant price changes would be better. This seems like a band-aid fix. The constant relisting is an attempt to be at the TOP of the rental list to get your card rented. This drives down prices and causes the market to get hit with to many transactions ( At the same time the high volume of transactions is something you guys are always advertising how many BILLIONs of transactions you have ). So let's see if we can't come up with a better solution. That removes the cards renting for .001 dec removes the constant price changes and also doesn't require changes on external markets to increase your partner's cost.
Solution OPTIONS OTHER THAN ADDING A FEE
Minnium Rental Price. If instead of adding a fee set a minimal rental price of 1-5 DEC, the 5% fee would increase the amount of dec coming in that could be burned. Thus raising the value of DEC and SPS and appearing to make renting MORE valuable, Not LESS. Also with a floor of 1 Dec for a lot of cards, this will set a floor price you can't go below.
Re-ordeing cards to First IN first Out. (When cards are the same price show the older one not the newer one as the next one to be sold to encourage people to keep there cards listed)
Cooldown, Don't allow cards to be relisted right away put cards on a cooldown period of 6 hrs to 24hrs after removing them to change the price.
(More Abstract)
Conclusion - I know you guys think this is an easy fix but its a BAD idea and if this was a proposal i thin you guys know NO ONE would vote for it. So i think its very bad taste for you guys to change the game economy so greatly when there are much simpler and less drastic measures
RE: Market Listing Fees & Expiration