Better donation graphics, make the sea on the left useful.
Supercell should make it so that the sea is actually serving a purpose. You should have a donation ship parked at a dock at the sea, and it will sail away when you request. When others request, their ship should sail and park at your dock and stay until you or someone fills it up. Higher cc level=bigger ships. The requesters name is shown above their ship and you click on a ship to donate. This would make more sense then having the troops go to the bottom of the map and dissapear, or appear from the top of the map. They will actually go and come from the ships. This will also give the sea a purpose.