A few ideas

[WinterRibs]

You should make another barracks. Such as a vechicle factory. You could put battering rams , catapults,etc.

[MrHawkey]

I guess it sounds okay. Except it would make Clash of clans too modern. I like the kind of 1400 period we are in.

[xmaxer]

Oh boy aren't you overflowing with description.

[W4RD3N]

You should make another barracks. Such as a vechicle factory. You could put battering rams , catapults,etc.

Expand on the idea. I don't like what you described, but maybe something along those line. Maybe 'vehicles' somewhat period appropriate. No idea what that would be though. Bomb goblin riding a crazed giant?