The new Ahsoka trailer is excellent, and so was this episode of Rebels

Not sure about Sabine's hair, but otherwise, such a good trailer I kept forgetting it was for a series and not a movie:

I rewatched the terrific season 4, episode 10 of Rebels ("Jedi Night"). You don't need any prior knowledge of Hera, Sabine, or the rest (I hadn't been watching the series)--the episode does an outstanding job of swiftly introducing the characters and explaining the stakes.

*(It's annoying Jazwares made a good-looking version of Sabine's Tie Fighter, but in tiny numbers so they just get parked on ebay by scalpers.)