Suggestion 1:I think you should add the ability to limit the amount of something that you can buy from a single sign. This would be cool for things like parkour res's so you could give out a one time prize. This would be really nice. Suggestion 2: You should add the ability to sell multiple items from a single sign. For example you could set up a chest that sells a full set of tools or armour. This would be a popular one (based on how many times Iv been asked how to do this.)Suggestion 3: It would be nice if you added the ability for chestshop signs to send out a redstone signal. You could do something so if someone buys something, you could add a piston pulling out the block under them and dropping them down to the start of a parkour. Suggestion 4: I think that the ability to sell one use to a button would be cool. You could sell a use to a piston or dispenser so people could go on a roller coaster or to get a few different items.