Uuuh... You wrote Jupiter two times... :/
I really like that idea but I would re-arrange it a little:
- Magic: Saturn (having such a big ring makes it feel magical, uh?);
- Tech: Mercury (always thought the mercurians could use some mercury-like fluid to power hi-tech devices, even if quicksilver is technically related more to Magic in the Skylanders universe);
- Life: Venus (obvious reference to the venus fly trap and it's generally associated to lush vegetation in various media);
- Undead: Pluto (the god of the Underworld so it!/ kinda speaking for itself
);
- Air: Jupiter (biggest gas planet in the Solar System named after the leader of the gods himself);
- Earth: Earth;
- Fire: Mars (not the hottest planet but basically a scorched wasteland so it kinda fits);
- Water: Neptune (again, goes without saying);
- Light: Sun
- Dark: Moon
I like the two mini-Elements being represented by two different kinds of celestial bodies which are often depicted as direct opposites.
I'm not that fond of Earth and Magic associations because the former could truly relate to Magic since it's where human Portal Masters come from... But then neither Uranus nor Saturn would fit the remaining Element.
The plot could revolve around Kaos finally finding a way to enter our dimension without turning into a toy and coming across a group of Skylanders which were scattered across all the different celestial bodies instead of falling only on Earth, thus being influenced by them.
They could go
really crazy with designs, this time.