One of the good things about Double Fine self-publishing the PC edition of Brutal Legend is that Tim Schafer's company can work on the heavy metal hack-o-RTS as much as they please without seeking publisher approval. On the downside, they will need approval from your American dollars to do so. Schafer has a list of additions the gang would like to work on, but it'll depend on how well it sales.
Schafer told Rock, Paper, Shotgun he "would love to" add more, saying that Double Fine has a "wishlist" of features it wanted to add, both from making this version and the console original. "But since we are a small developer publishing it ourselves, we have to go with the best version we can make and then hope it's successful so we can add more."
Schafer's keen to add new multiplayer modes, make Lionwhyte a playable faction, introduce new factions which were originally planned but never made it into the game, and make a few tweaks "to give you more feedback about what your units are doing." Things like that. But it depends on you.
"Depending on how much money we make, we can keep going with that."