Hopefully, they still consider Kaos. I mean, the games—Spyro's Adventure, Giants, SWAP Force, and Trap Team—they all had Kaos, and he was the main villain.
I don't know much about the upcoming Skylander game. Like I said, hopefully they still have Kaos as the main villain; new "Series 4's" Skylanders; a good idea (like trapping the enemies in Trap Team.) Whatever it is, it will be a huge hit.