Upgrading walls with elixir
I think the biggest part of the update is allowing the use of elixir for wall upgrade. This completely changes the game. I think its a good change but these are my predictions of how this will affect things:
1. Everyone will have better walls. they can build defenses at the same time as walls, and all the formerly useless elixir will go into walls. Effectively the price of walls just got cut in half. Plus you don't have to stop building defenses to work on walls.
2. Elixir now becomes a raid target, not just gold and dark
3. People use cheaper armies and less spells to save elixir
4. War becomes less popular - people don't want to waste elixir on expensive armies. wars were a good way to reduce elixir and convert it to gold, but that doesn't matter now.
5. Base designs will all have to change to defend elixir just like gold.
6. Elixir loot will be scarce as everyone will use theirs up.
7. Upgrading high level troops will be harder because people will raid large elixir stores