Too much random
Please implement a kind of selection when we get epic or legendary heroes. Someting like 1 from 3 for epic and 1 from 2 for legendary. For common, uncommon and rare the random sytem is okay, but not for epic and legendary.
The chance to get epic or legendary heroes is very low, and it is very frustrating to get a hero you don't like/dont't want to play with. To play this game over a long time it is importent to get a fellowship of heroes you like (not even the top heroes).