1. The Terrain is empty and bad. Trees are spammed with big brush size. They look unnatural
2. Your triggers leak. Leaks can cause major lags, you should clear them.
3. Saw nothing that is excitingly random, unfortunately.
4. Why does Humans have units in the left and right borders on the center of the map? that is not balanced.
5. Your description is lacking and credit list is mandatory.
6. The game is too simple and boring.
7. There is no shop nor bounty which makes the game even more boring.
8. Abilities' positions are not in order.
9. Most Heroes are just normal heroes with custom skins.
10. The training hero time is just unnecessarily long.
The map feels like you've made this for 2 hours. Not good I am afraid.
Check These links:
Map Submission Rules
Advanced Terraining Tutorial
The Ultimate Beginners Terraining Tutorial
Things That Leak
Abilities - Introduction