Before I review, I would like to sat that this map was ok. Fairly simple, and there are a lot like this. Nevertheless, here's my review.
(Insert Playability analysis here)
The scenario was very confusing at first, well, ofcourse, the name 'it's nice to seige you' was preety obvious that you have to get you're men to the enemy's base and well, seige. The units were hurdled together, and it was hard to move them. You could have added some triggers that made some troops appear every now and then, instead of a giant army waithing to be selected and moved. The same problem for the enemy. The buildings were mashed together with the units and it was hard to navigate. Also, you had to kill all enemies. You could have made it more interesting by making the enemy train, or when the Plenty Vaults are captured you win, or killing a leader.
(Insert Balance analysis here)
The balance was not that well made. In your desctipion, you suggested that it was going to be difficult, but, no. It only took a while. The player had a titan, along with swarms of myth units. It was preety easy, not challenging.
(Insert Creativity analysis here)
I guess it was a little creative. A huge army attacking a fortified city. Although, no special triggers or eyecandy made the scenario stand out or anything. It was fairly simple, and lacked creativity.
Map Design: 3
(Insert Map Design analysis here)
The map design was not good. The only thing that brought it up was some bushes on the field of the army. Also, in the city, at the farms, instead of city tile, you added a grass, that was good. The map lacked trees and rocks and mixing of terrains. Grass A, Grass B, ect, can be mixed together to make the enviornment more realistic. Also, no grasses or small details such as spites were used.
(Insert Story/Instructions analysis here)
No instructions whatsoever. Some people can get confused on what do do. Also, no storyline. No objectives, which are a big part of scenarios and campaigns.
Additional Comments: This map was ok, but could be improved. And don't be put down by the bad score, you will improve. No one here started as experts, beleive me. Good luck and happy designing! :)