The ability to promote people in your clan from admin to co-owner, you can't have more than two co-owners at one time. This would make the game more cooler because you wouldn't have to write co-owner as peoples titles and it would also make it easy for the members of your clan because if they need anything they know who to go to.
might as well add in more functions eg appointing admins in the clan and changing titles of admins.. only difference between owner and co-owner is when co-owner leave clan, the clan doesnt get disbanded lol
We should also have elders and instead of calling it "owner" we should call it "leader" because you can never truly own a clan. For example look at iG's civil struggle whereby the majority of the clan left when the "owner" was doing something they didn't like.
The devs already announced better clan structure is coming. Probably next few updates will address this.