Good point. But, even though I haven't tested the map with multiple people much myself, I think that those who go for gold early have an early disadvantage. With 1 or more miners to mine the gold they don't have a lot of fighting power. So, if you charge in their base they won't be able to defend it with miners, and if you take a Ghost Wizard or Demonlord Avatar to the Sun Well, they won't be able to stop it with miners. (I'm referring about the early game when everyone has 5 food). If you don't think it would work I'll make every player get gold per minute. Or maybe even a unit that gives a little gold per minute or something.
Also, after you decide whether or not I should add gold per minute or a unit that does that I'll release the new version in around half an hour because that's all I have left.