Voted yup! Always a good idea. With so few players, it seems like a needed change, and if it causes more players to start playing, then that's a good problem to have to deal with later IMO
Currently what I'm forced to do is to list items that I feel are worth 10 - 19.99 fg for 20 fg everytime. I waste 1 fg over 50% of the time, but in the end I make enough fg to justify it and don't lose a valuable MP slot for skillables. I also end up buying my own 1 fg skillables back for 1 fg kind of a lot if I need the space for a different kind of 1 fg skillable which is being bought faster

That costs me the 0.05 fg fee, but ofc can buy back 19 skillables for the return you get for selling a single 1 fg skillable (0.95 fg), so it's not really an issue that you can't delist an item for 24 hours because you can just drop the price to 1 and then buy it back.
One thing that I'm not sure you guys are all aware of, but I'll state here as I stated in another topic recently since fg is tight for a lot of slashers:
19.99 fg or lower, 5% MP fee is only assessed if the item sells.
20 fg or higher, 5% MP fee is charged upon listing and is not refunded if delisted or doesn't sell.*
*If you list an item for 20 fg or higher, and then you reduce the cost of the item (after 2 hours you are able to do this) you will not be charged the fee again as long as the new price is 20 fg or more.
If you reduce the cost of an item listed for 20 fg or higher to a price 19.99 fg or lower, when the item sells, you will be charged the 5% fee again.