A feature I've wanted for Diamond Hunt for a very long time is for Market listings to automatically be removed when a person's collection box is full.

However, a better feature are for Market listings to automatically expire after 24 hours of being put up. This is likely easier to implement and addresses more problems.

The Market is full of either troll listings (stuff listed for exorbitant prices with the intention they'll never sell) or those by people that have full collection boxes, so can never be purchased.

Occasionally, people have things to attend to or simply disappear from the game... those listings to forever remain on the Market.

Having a 24 listing period before they expire solves all of that. It ensures the Market is more dynamic, free of most useless listings, and encourages people to check back at least once a day to stay active.

Please make this type of system a priority.