Hey, why not do this: when both Barbarians AND Archers are upgraded to lvl.5 you can breed 'em. There is three chances you can get by the breeding: Archarian (Barbarian with both sword & bow) or Barcher (Archer with both sword & bow) or... nothing! You could waste you're money for nothing!! The chances should also be:
Archarian: 30%
Barcher: 30%
Nothing: 40%
And plz do the same thing with Barbarian 👑 and Archer 👑 but the make Archarian Prince and Barcher Princess (they are MUCH stronger than regular Archarians and Barchers)
Please take my idea and goodbye

