I think the core cast is a great idea.
Sure everyone wants to see their favorite character again or finally on screen but the core cast gives it a more regular episode vibe.
But i wouldnīt mind seeing Adora or the mentioning of the great Rebellion to make sure itīs after the events of "The Secret of the Sword" to be honest
But in any case iīm really looking forward for this new exciting project and i saw the whole first scene on Facebook and i like the eery transitions from location to location around and inside Snake mountain so much nostalgia but still new. Love it!