I've noticed many th8s that finish all troop upgrades and max entire base(other than walls) and have nothing to spend elixir on. They go so far as to leave their elixir storages outside of their base because they have nowhere to use it. I think others would agree that being able to upgrade lvl7 walls to lvl8 with elixir would make the later stages of th8 not as boring, and more players would be willing to max walls before moving to th9. Thanks for your time.

