Based on the rarity of the 7* heroes, one would think they would be some of the best all around heroes in game. However, they are average at best and don’t seem to excel at much of anything. You can build up some of the 3* heroes to be much better overall than the current three.
Is there any reason for their meh-ness? Does the exclusiveness mainly act as a collectible or will they see better capabilities come to them in the future where they actually serve a more well-rounded purpose in a team?