So, what's going to be their UR? Possibilities I see are:
Labyrinth Wall - not worth being UR, but it definitely makes sense as their ace card
Jirai Gumo - Could see some fun uses
Riryoku - Would be a really weird choice since it's been in the game since day 1, but the bros used Riryoku and it's an UR, so it's a possibility
I'm leaning towards Wall Shadow, personally. We already have Harpie Lady Sisters and Insect Queen, who cares if we have another terrible Ultra? I could definitely see Labyrinth Wall as one of their Supers. I'm actually more curious as to what reward cards they'll give. They didn't exactly use a ton of cards. Guess we can get multiple Remove Trap, lol.
I'm not a fan of using a powerhouse for defensive purposes. Yes, the threat is real, but with al those flip effects, otc, even some rotating cards.. my guess he won't be long on the field.
Second coin toss can benefit something or when its available the card last turn. That would be great.
If anything when they are available i would rather put in a dark elf or zombyra. But thats future talk,haha.
Actually Shadow Wall was very op in the anime, it could move anywhere through the labyrinth and destroy any monster. So it could be an UR. But no one would use it...