Pretty solid
Animation was excellent as always. Robot designs and action were good. I like that you decided to change the music from A to B since it fits the change in setting from the ground to the factory in the sky, and it is a pretty good remix. I'll look forward to where you decide to take the series next. It won't be easy because the concept is becoming exhausted, and changing it will have some complain that it's not the same anymore, but that's better than making the same thing over and over and becoming stagnated.