Transitioning from StarCluster 3 to StarCluster 4

I have removed StarCluster 3 and StarCluster 3 Light from availability. I have replaced SC3 Light with StarCluster 4 Free. Now I have to decide what to do with the old game - well, not that old! I released it in 2011! I made SC2 available for free when I released SC3, but that was stopped when someone reviewed SC2 and gave it one star on RPGNow. I don't need that when I am averaging 4.5 stars on my reviews. Should I release it for free? Release the Developer's Edition for free with the license? Give out a new developer's license with SC 4 Free? Please comment and let me know what you guys think!

At RPGNow:

At Precis Intermedia: