Able to switch levels of troops

I have been struggling for a while due to resource problems because of the cost of troops. I have a th9 village and almost all of my troops are maxed. However, when I attack some some lower level villages, I really don't need high level troops and I could 3-star that village with 1 or 2 lower leveled troops. For example, I have a lvl 4 golem. But when I am attacking a th8 village, I can 3 star with a lvl 2 golem or even with a lvl 1 golem and they cost really less than a lvl 4 golem. So I suggest being able to switch our troop's lvl (such as lvl 4 golem into lvl 1 golem) in the troop's status info and using them in battle.

Or you could bring Giants or even just barbs and archers

As Livvy rightly said, adjust your troops comp.
6 giants are decent to replace a golem.
There is absolutely NO POINT in decreasing the level of troops.

personally i think the cost to build increases to much when you upgrade troops and should be reduced. anyway as for what you have mentioned i fully support, but i doubt it would happen.