It was awesome as while it was stripped down, it still had that feel of Age of Empires. I think the only maps that would not work were the really huge ones (probably a memory issue).
I play some of these classics as I discover new maps or fan made content for them. Doom being the top of the classic pile as fans will never let that one die (thankfully id Software left it open for fans).
RE: Age of Mythology: Retold, from the perspective of someone who hasn't played the original