I've made some changes to the loot crates at spawn...
As some people had already noticed I changed the Legendary crate to be an Ender Chest.
I've also tweaked the loot based on feedback. The Common & Uncommon crates have had some slightly better items added, Anvils have moved from Legendary to Rare and the Rare crate now includes a Shulker Shell.
In addition "spin time", the time taken to get your prize, has been reduced by 60% to make it less tedious to use multiple keys (such as when you rankup).
Enjoy!