Oh man, give them about a decade and there will probably be a dozen or more variants running around. Let me know when they get around to building some of the designs from the wacky timeline. That wacky Napoelon gundam, or the Epyon.
Honestly, what the hell is the point of that? (Also, you can clearly see the Gundam is not actually independently in contact with the ground so I don't think it's "walking" per se).