You know what... You brought up a good point. Disney bought the rights to PR from Saban. And now, Disney might be saying "to hell" with the live action and going animated. If they go animated (or if PR is eventually canned by Disney), Disney could very well end up selling their rights of Super Sentai to another company to make money. If Disney feels as though they dont need the sentai footage and they arent making money off of it, there's no reason to keep those rights.
A company like Adness could very well have the ability to purchase those rights and form a new show based on Super Sentai. Doesnt mean it will be Power Rangers. Because I doubt Disney would ever sell the rights to Power Rangers. But if they arent using sentai footage anymore, the rights to sentai could be sold off. And we could see a new type of Power Rangers show hit the airwaves.
By the way. I dont mind that Dragon Knight is being pushed to fall. Im more excited about the idea of a Kamen Rider MOVIE! Now that's a bad ass concept. We should all support the show when it hits the airwaves and make it happen