I appreciate the informative quests and fun concept, but the map itself is lacking in quality. Here are a few things I believe you should take a look at.
1) The ammo system. Your ammo system to use for a map with a great deal of units is painfully hard to use. No one wants to manually refill a whole army by using the select user option. It just wastes time.
2) All units are heroes. I understand you want units to level up mimicking an experience system, but this causes some problems. It's a such a long way to level up to twelve and like the ammo system, manually learning an ability for masses of units is not the best idea.
3) Unfair/confusing layout. There is an excessive amount of cliff marked pathways. It's hard to see where to go, especially on the mini-map. Also, it's unfair for the bottom right player to have access to free gold mine.
4) Models. Though it's fine not to include custom models, having the same model for different units is simply confusing. Sure, there is are icons to distinguish them, but it does not compensate enough.
There are a lot of little things like no hotkeys, unnecessary abilities as call to arms, fails make it confusing. I do recommend you just work on your new project instead of this one, but I've set it to await update/needs fix just incase.