Skylanders 7 to introduce new elements?

Here's a bit of a pattern I've kinda noticed. The first three games of Skylanders have just 8 elements. Magic, Earth, Water, Fire, Tech, Undead, Air and Life. In Skylanders Trap Team, SuperChargers and currently Imaginators, we have two new elements (three if counting Kaos), the Light and the Dark. In the first three games, we have a total of 10 Skylanders in each element. Currently for the Light and Dark element, it's only 5 each (9 if counting the trappable villains). If Skylanders 7 were to introduce new elements, the Light and Dark elements might get more character than they usually do and won't be considered new anymore. Maybe something like food or love or space or probably something else surprising. Maybe there might be another villain just like Kaos but would later be recurring and he also gets to have his own element when he get to play as him.

Do you think that's what might happen in the 7th game or do you think they got plenty of elements. No need for more.