Thank you for your answer!
I am aware of the tensions, but every conflict needs a catalyst, that “last drop” that will light the fire.
That part about the same team: Yes, that is the main problem I will have to fix. The main reason they would have to get back together would most likely be that common enemy, far more powerful than all the kingdoms on the island, be that Karzahni or Makuta, or even a new thread from some other island.