Oh, I just played your map. Overally, for me personally, its good map I like it.
I found good and bad points, and neutral as well, but in my point of view, which does not need to be case.
I do not like much that overloading with units, I did not like Blizzard doing that as well. I prefer better more funny or unique ideas than throwing 100 various and powerful units which player should kill. It is boring. After I destroy one base, I need to move to another in similar way and so on and so on until I finally destroy generators and can movie to Grom Hellscream. You could just add those demons to existing units in base without overloading.
Neutral point is controlling of blue base. This can be good for fun, for more people whose like controlling two players at same time, but also can be distracting. Sometimes its better to let AI.
Good point is definitively this idea of magic wall which can be broken if you destroy power generators! I like that idea.
But as I said, good map.