Surviving Archers & Wizards
I thought of something that would make clash of clans more realistic and would also make it more epic. I call this feature "Surviving Archers & Wizards".
It gives archers and wizards on archer towers and wizard towers a slim chance to survive after the tower collapses, and then they will act as regular clan castle troops, with reduced hit points from the fall. As we players have noticed, when you upgrade archer and wizard towers, archers and wizards on top of them also get level - ups. So on higher wizard and archer tower levels, they would have a slightly better chance of surviving the collapsing of the tower, and if they survived, their hit points remaining would depend on their level. Also, since archer towers host two or three archers, there could be a chance of more than one surviving the fall, but it would be super rare.
There is one considerable drawback - this could also cause balancing errors, since troops with favorite targets will be taken care of quickly because they would ignore a survived wizard. Troops with favorite target of defenses will be nerfed if this is added, because once they take out a tower, its inhabitants may survive and make short work of the troops. This can be fixed by preventing wizards from surviving, and make only archers possible to survive. It would also be more logic from a point of view, as a collapsing crystal or hard rock tower would cause more harm than a falling wooden or stone tower.
This is in my opinion a very cool idea that would add a new unique touch to this game. It will work on balancing as well, as most people do not have clan castle troops when not in clan wars, the wizard and archer presence on the battlefield would balance things a little bit, while sort of unbalance them in the same time as mentioned above.