Steam is for "n00bz". If you
really want to ruin a game, have it published by some huge gang such as Ubisoft or EA Games.
We'd end up with an unifinished thing with no random map editor, 5 races, no unique units (every nation can train Man units only), and only 25 spells. Then it'll be flooded with expansion packs slowly drizzling the rest of the features into the game over a period of 1000 years.