My suggestion is that EEC makes it possible to add money to buying trade signs without having to make another sign. If there is no money in the sign, it would be great just to click on the sign and the amount you want to pay for the item comes off your balance. If you want more money in the sign just keep on clicking and that increment will come out of your bal. Having to make a new sign every time is irritating. We can add items to a sign without destroying it, I hope we can add money to a sign this way too.
It would be needed to add this to essentials then - and I think KH once said that would not happen in the foreseeable future, although I might be wrong and misremembering that.
http://www.ecocitycraft.com/forum/threads/add-to-trade-signs.128582/ Already suggested this... Twice. Great idea, but sadly it's not getting added.