Godzilla series Kaiju that should be revamped

The giant Condor from Godzilla vs. the Sea Monster of course. I'd like to see a revamped version Megalon. He had a lot of potential and looked pretty cool but is associated with a gay couple who built a robot that could somehow fly and grow to Daikaiju sizes. 

I feel like it should be an older monster that hasn't been brought back in a while.  Megalon could be an interesting one.  Manda or Varan are other good possibilities.  Giving Moguera the attention it deserves would be pretty boss too.  Personally, if they did a sequel to this movie based off the book Godzilla Invades America I would flip s**t.