Hope Ray V is interesting. But as much as I like Utopia, I don't see this having much play.
Volcasaurus and the new Number C105: Burning Knuckler - Caestus the Comet are also rank 5's with a similar burn eff.
In a ZW deck it can be summoned with 3 Level 5's since you need level 5's for ZW - Lion Arms. But you'd probably would rather go for Lion Arms anyways.
You'd most likely be summoning it with RUM - Barian's Force. And technically you can run 6 of them: 3 Limited and 3 standard.
You could use utopia/ray and use RUM to overlay into Ray V, detach to burn and then if you wanted overlay again into Gaia Dragon.
Does anyone know if Aster Drawn's effect would work with this?
Summon Aster Drawn and other lvl 4, overlay into Utopia - Draw 1.
Chaos XYZ Change into C39: Utopia Ray - Draw 1
Activate RUM - Overlay into C39: Utopia Ray V - Draw 1
Eff of C39: Utopia Ray V, detach to destroy and burn.
Chaos XYZ change into Gaia Dragon, the Thunder Charger - Draw 1
It probably doesn't work, but it'd be cool.
I'm really excited for Gagaga Kid, it also kind of completely outclasses Gagaga Clerk. The loss of a battle phase hurts, but makes for good Volcasaurus plays or a first turn Zenmaines, etc.