Not a very good map overall...It's major flaws are balance(VERY bad) and the total lack of story and instructions. I think this map should better be placed under the Castle Builder section, since you have all the resources available to build a huge fortress, while the enemy invasions are nothing more than minor disturbs to your Lordship!
Playability: It is quite poor. There are no real problems to preoccupy you: no scripted events( fires and staff like this)and invasions extremely easy to defend against. Another problem is that the scenario lasts too long and time intervalls between invasions are really huge.
Balance: Well, you start with 50000 gold... Need I say more? I just built 100 xbowmen,10 ballistas, really thick walls and 50(!) knights to make sorties...Your opponents are mainly laddermen and slaves, so it is a large scale massacre, you just lie back and enjoy the spectacle, without even touching your mouse or touchpad...
Creativity: I think some credit could be given for the fact that at least you get the opportunity to make a large base...
Map design: Not bad at all. I think a 3 is fair.
Story: .........
In my opinion the map could be greatly improved if the author worked a little on the balance. It should benefit from a decent story too.