I think the idea was good but the items that should be in a separate store earning gold as before, the exp bar for upgrades on heros and other creatures'''unique''would be good because there can be only one field but now a goblin that appears to +15 in the field is ridiculous!
And I would rather defend the castle and destroy the enemy heroes are missing for a more entertaining saga, a vinel game more difficult, unique items of bosses who do not sell in the store, upgrades his castle ...
10 times I prefer the good old epic saga of war and its four great games!