New resource for walls

Dear supercell,
the addition of elixir for wall upgrades has made the game somewhat less enjoyable... Hard to find elixir for what we used it all this time in the game, and our super war armies and generous donations to our Clanmates is suffering with the elixir shortage...
I suggest the introduction of new resource which can be used solely for walls since walls are such a long expensive project. We could also use the same resource to clean up the grounds as well.
Any comments? I hope this can help the economy recover and make the game fun again.
thanks for taking suggestions!