I think it would be a neat idea to do something about your f2p and p2p middle ground the Game some what lacks and I don't count soulstones. nothing wrong with P2P however castle clash is almost ( you don't pay? enjoy years of grinding cause you won't get far with the rewards we give you.) Yes castle clash has good rewards they give a lot. but for accounts 80k+ it's really nothing. Make a mode similar to deck heroes and their mining game mode they have. After months of grinding you should earn something cool. Make it so both f2p and p2p have a common ground.
I think we have that thing called Lost Realms.
And the reward is Blue crystal to boosts inscription,
Which eberybody get the same thing, same purpose.
There are 43 Legendary Heroes (up to Mechtesta, and excluded 7 for 4 Dragons and 3 Gem Purchase Reward Heroes), 9 Elite, 8 Ordinary and 3 Slime that rollable with gem. Chance to get 1 specific Hero is 1.6%. So, good luck.