One think from France, so sorry for my mistakes you won't miss !
There is pink and dark troops, but no gold troops. There's no machine too.
I propose to add buildings and troops getting with gold :
- One tavern to employ expansively troops for our castle or the battlefield (elves (with arrows and fastness), orks (with maces and starkness), bandits (numerous but weak), saboteurs (infiltrating ennemy base to disable a defensive building), traitors (which can return reinforcements from the ennemy base...).
- One engineering factory to create siege weapons (taking big places but shooting stark from far (catapult, trebuchets, scorpions...).
- One defensive building against siege machines (like attack's eagles breeding or defensive saboteurs...).
One suggestion for dark barracks : create shadows who paste ennemy troops to make them slower and weaker.
I hope you'll find my proposals interesting and seeing it soon in Clash of Clans !