If they patch early, don't retire it.. just lower the trainer options to something simple, Gold, Movement, maybe a City option or 2 for fast production.
People would rather have the most simple of options then all of them if itd keep it from being retired.
More people playing this! Steam sale brought it down to the lowest price I've yet to see. Thanks for the update, like posted above give it a week or two before they squash the bugs from what I would assume is their last 'big' update.