Playability: Games that have 99999 Resources aren't very well apreciated, altough playability is average, you could include some more things.
Balance: As stated before, games with 99999 resources(Campaign and Scenario games, not multyplayer) are rarely any good. I can't set a balance. If your a little good, it's easy, if your bad, you'l never beat it.
Creativity: Very uncreative. 99999 resources is a little too exact. Further more, you should have made more invasions. And an AI Script.
Map Design: You would get a 4! The map is slightly better than random maps. But the sea... and England... The sea could have some sea rocks, square cliffs, and Deep/Medium water.
Story/Instructions: This is the strong point of the map, really. Although i saw some spelling mistakes(not to many), the Story is rather fun. Also the author including a map on the instrutions.
Suggestions: I can't tell an author how to be more creative, that depends on the person, but try to make it a little challenging, yet not much. And don't forget the water.