Mimo: Map is poorly designed. 
  I'm kind of feeling the same way.  
 The good guys have a serious advantage in types of units, while the bad guys have something of a wizard advantage. Mimo and I both had Summoner for our special trait, which at least wasn't technically a drawback.  
 Also, did any of you actually try to move toward the middle in either iteration? There are poison clouds hanging around and firestorms can randomly hit your forces during the indy turn; in the first game, I had a stack that took damage from at least 3 different firestorms (thankfully not much), and in the second game, I had a stack take 30 damage between all of my different units from a single fire storm. The middle was a death trap.  
 The two players on the top positions don't really have access to each other; you either have to wade through a heap of Chaos Spawn and some hell hounds, or you go through the volcano and possibly lose your entire army before getting in range of your opponent.  
 Some of the terrain deformation created neat visual effects, like craters or a waterfall, but it also rendered the strategic aspect a horrendous mess. There is one area where even with the hex grid active, I wasn't sure whether my two stacks were adjacent or not.  
 I like the concept of "race to get your wizard out", but this map will be won by your starting forces, anything you can scrounge from the map, and any level 1 extras you can build. It is effectively a magic-less map. There is no gold and even less time for more than that.   
Mimo: My guess is that the bad guys are supposed to bum rush the center, find the entrances to the underground, and take advantage of their underground oriented units. That's a stupid expectation since there is no way to know that and the allure of a bunch of weakly protected ruins is way too strong. I didn't even know there were cave entrances till my ally pointed them out to me! 
  Unless the top left position had some other cave entrances, no one except my position (top right) was bum rushing the underground. I was sitting almost directly on top of one cave entrance, and the other entrance was in spitting distance of the first one.