Gameplay
I think it’ll be a good if the developers add some things in the game:
2 slots in shop in which you can buy only rare and epic heroes
From Sacred shard you can get only Legendary character, same as Legendary chests in Clash Royale (from them you can get only legends). I think it’s not good to donate so much money and to pay 100000 to get epics. Just increase the difficulty of getting the shard