What if the show did go one to have a 3rd Season? Or maybe even a 4th and 5th? What would be left for the show to explore?
Well, for one thing, the series would've definitely needed a new main villain. True, i myself would like to see the Huntsman and the Dark Dragon return, but i also agree that that would seem a bit lazy.
Also, with Jake and Rose finally passed the "is it safe for us to date" phase and Rose finally having all (or at least moderately enough) of her memory back, the series would have definitely needed to find a new way to explore their relationship
And lets not forget the fact that Jake's father is now in on the whole "Magical family" secret. If the show had continued, the writers would've had to find a way to work that into story somehow, without it sounding to forced