Two updates to revolutionize the game
1. Let us use our hero's while they are upgrading... Move the upgrade to the lab or even better do something similar to the clan castle where it's still functional while upgrading.
2. Modify the search for an next base opponent by only showing opponents who's resources are greater than the cost of your current army. I for one would boost my barracks more often and build high lvl units like PEKKA's and drags if I knew I was only going to see bases with resources that covered the cost of my units.
Thanks for listening!
Hawk