There will be creeps, just like AoS. Neutral creeps are still in consideration.Why not make a quest type where minor quest are available for scoring extra gold if there is no creep system or creeps in the forest for hunting.
Well, orbs may not necessarily be the same as default orbs in Warcraft. Orb Effects cannot be considered "imbalanced". I believe it's the nature of the map that makes an Orb Effect unbalanced.About the orb effect It is annoying but helps in balancing in case of overpowering an attack modifier.The balance result can be seen in dota. Some attacks modifier can be not orb while others extra strong abilities can be orb or restriction of more than one modifier