It is a great concept, easy and enjoyable.
Just expand it and it will be a killer app.
5 stars + favorited
Suggestions:
+ add some nice translucent health bars and some math on tooltips
+ add some articulated rare quest
+ add some combo-class mechanism (a warrior of yours trains a mage and it becomes a warmage or something similiar)
+ add buildings like smith, church and such (age of empires docet)
hope it helps, byez.
Thanks for the suggestion! Noted :D