This is such crap. The training times are so high you can only raid once every hr. The upgrade cost is so high you almost HAVE to buy gems to progress. The defense is useless your better off just leaving everything open and get shield. I've raised all of this with customer support. They always say the same thing "I'll forward your msg to developers." Which I doubt, they even look at the forum or care about improving the game.
My tip: Its a game. Just keep updating and in the end u will get where u like to be. Dont be afraid to loose loot. Just try to make it cost them is my strategy. Keep updating the hero's at all time. Every EXP is good, even if its low. What is even more fun is checking out what all hero's can bring. PPL are focussing to much on the legendaries. I think there is more to bring in the mix of a group u are using then only the legendaries. The problem will be that u will need to test it. Hi level heros will tell u more. I have all heros except 2. So i will go test this out soon. Thats whats left in the game for me.
Upgrade cost to high i cant raid or collect 510,000. Training times are ridiculas it takes 45min- hr to raid once. Defense is pointless, troops dont defend themselves in attack. Chat is broken beyond the piont of repair.
I have too agree the troop cost is pretty shitty once you get the fairy dragons. I have to look for someone with 50000+ to not go backwards in mana. Almost makes me afraid to upgrade them because the the troop cost will be more expensive.