So as most people know by now, when you look on someones Player Profile, you can see what lvl troops they have.
I personally think it would be a good idea but a minor idea to show what troops they are upgrading, if they are upgrading troops. Something like a flashing extra star to the lvl they are upgrading to, so for example, If i'm upgrading my giants from lvl3 to lvl4, there will be a 4th star flashing or something along those lines.
Yes this is a very small idea but i think it would be a neat idea.