We've got our league tables working with completely procedurally generated heroes, everything from the items and armour, down to the clothes, the skin, the hair and the name are random.
The next step is to allow the player to buy these heroes to add to their own party, which they can use to challenge monsters from the (currently slightly broken hunt screen).
Monsters will persist in the game until they are killed, meaning that they'll also level up and collect the loot if they manage to kill any heroes. Lots of work still cut out for us and we've been having serious issues with the tooling around Clojurescript. Ungooglable compile time errors. Clojars being down for nearly two days. The toolchain breaking previously stable committed code etc. Not fun.