I have a server I wish to open for a small community and I love the concept of the mods, I'm planning to make keys earned by completing quests, unfortunately something is missing from the mods that I wish was there.
The ability to have the box lock itself back each time the loot is back inside. This type of system would make renewable loot boxes a thing on servers and I think it's important.

Added in 2.1.0

You can find examples on how to use the relock
for worldgen replacement: https://github.com/DaFuqs/LootCrates/blob/main/example_datapacks/default_config.json5
for loot tables: https://github.com/DaFuqs/LootCrates/blob/main/README.md#available-item-tag-data

Ping me when you have opened the server. I would love to come around some day. :)
Very interested what you are doing with the new option.