Surprised this hasn't been suggested before (I did try searching for it), but I suggest:
During your raid, if you have spells being built in the factory, or a barb king sleeping...they appear on your tray as "grey" with a green gem on top of their faces.
During the raid, you then have the opportunity to gem them awake or complete...and then use them.
You can gem them before a raid, so why not during?
Supercell would likely get more gems this way, as it falls (quite strongly) into the "impulse buy" category.
Thoughts?
~Fritz



