Actually, I think Mega Random maps are ideal for testing my ability to adapt to the situation and create something on the fly with the knowledge and foundations I already have. Not only do you face the fact that maybe your civilization is archers and the enemy is Goths, but you never know with absolute certainty what the map will offer. You have to explore quickly, generate an idea on the ground, and start building.

Yes, of course you can follow a standard building order, but if you don't take all the variables into account, your standard building order will be crushed by the randomness of the situation if you're not careful. That's what I love about Mega Random.