Combiner?

we should have a combiner that combines two troops to create one example giant +healer = giant healer it heals the whole army every 20 seconds and lava hound+archer=lava archer it shoots arrows and when it dies it divides into two

we could have barbarian+pekka=pekkarian that it touches one thing then goes to the next and when it dies everything it touched breaks

I like the idea, but i don't think it would work for everything. But maybe you could combine certain units.
Ex: Wizard riding a dragon, or like a goblin on a hog, or wall breaker and a barb to make a bombardier for buildings.
My point is that it wouldn't work for everything, but some things