Love the game, Devs: very good job!!!
Maybe just two issues: 1st - trade option for items not only for gems but also for gold/gold and gems, 2nd - special skills should also miss, cause otherwise rouges can be easy killed just bu using skills , cause they can not dodge them, whereas for warriors block skill works fine with special skills.
Otherwise I agree with World Boss - superb idea.
And cant wait to see further upgrades :)