I want to suggest some feature:
1: A game mode for player little time
Why there are people deleting accounts? Because they don't have time
This is the major cause. Need balance between player rich and player poor like player have time and player don't have time.
+ Have a special missions but time missions special equal energy player have.
Special missions help player don't have time can use all the energy they have by one click. Of course coins and experience they earn limited by level player.
And Special missions can't finish by donuts or batteries.
+ why have missions booster but don't have training booster? need training booster
2: Improved game graphics:
+ Ironic Hero Set, Amphibian Hero Set ..... too old , need new.
+ Sidekick don't beautiful
+ Why reward attack villain always is sidekick dog and cat, sometime is monkey?
( except events)
Although I can buy other sidekick in shop but I don't like. Reward sidekick from attack villain too boring.
Must have new sidekick: Tiger, Lion, Leopard, Snake, Bird .....
+ Need more information hero: eg : age, sex, country in your hero
+ Need add statistical number of time top 1 attack the villain, time winning strike attack the villain, time top 1 Weekly Tournament Honor and Experience in your hero and top 1 Weekly Tournament Team Honor in Satatistics and trophies team.
Sorry, My English is not good!