I am still coming across new players coming to the game through Steam and I think putting the game back on there is one of the best moves you have made. Just wanted to remind you that Steam usually does a big sale over about a 1 week period at around this time of year.
I really hope the marketing team are on the ball with this as millions of customers visit the Steam home page during this time looking for deals. If you could put something like the Turan pack on there during this time at a discounted price it could do wonders for bringing in new players and old players back to the game.