So this is just a suggestion but i think its great. Users who unlocked tier 3 can build their own maps when they are in a guild and have at least 10000 crowns
And so it works
For creating maps you need map slots you can buy one for 1 krogmo coin 5000 crowns and 100 energy.
the player can create levels using free items (basic monsters, items, ground)unlockables(getted by archevements, colliseum victouries)
and high class what use always cost (super items rare monsters background music...)

the maps can be rated. The maps with the higest ratings will be used in gates.
to play a user created map you must pay 2 energy or 100 crowns.