This is a great start.
I really think you should expand on this, here are few things that I just want to note so you miss it :3.
1. There needs to be a bit of tweaking on the trade screen. I suggest you lower the sell prices, because it gets a bit ridiculous.
2. I suggest you expand on the resource mines, because just having one orchard goat farm and mine is just not enough mid-end game. I suggest either add upgrades (like the mine) or make it so you can have more of them.
3. Just some more gameplay (more dungeons, more units, ect.) would be great.
4. maybe include some story-line or plot (keeps players playing :3)
I noticed the beautiful art in the game and I see your art skills being used keep it .
I really don't mind the clicking in the game unlike other people, but of course I'm the only person who didn't mind the million menus in oblivion >_>