Saw that.
My wife and I were invited to our neighbors house to watch an episode last winter (the healing of the man at the pool of Bethesda).
Afterwards, they asked us what we thought. We were polite, but I said the need to make up stuff, in order to have an hour long episode, can lead the viewer off course, possibly missing a key teaching or doctrine.
And yes, the transfiguration is a big deal.
Makes perfect sense to any believer who has followed the first three seasons.