Any TH8 out there probably have noticed this but,
there's just to much Elixir in TH8,
I'm a TH8 max defense (except walls and troops), I got my elixir storage full and also my Treasury
so maybe supercell could make the level 7 wall upgradable via elixir,
that could balance out Gold and Elixir ratio.
The main issue with this is that this would greatly harm the elixir economy at TH9. Unless you have a remedy to counteract this damage, I don't think this should happen.