Once the series is over
I know the original plan was to make Foundation an 8 season series. No way of knowing if that will happen but I sure hope it does.
Bouncing back to Alien Earth, having Synths in every single movie was getting boring. One thing I really like about this series is the introduction of Cyborgs, Human/Synth hybrids as well as traditional Synths. Plus we've only seen two of the four corporations so far that control Solar System.