The scene where Anakin sense's Ahsoka is on the ship and lets them go is a really good example of what Dave Filoni does so well.
It's obviously a call-back (call-ahead?) to the scene from Return of the Jedi where Vader lets Luke's shuttle land. But instead of being just call-back it actually works as a character moment on it's own. Anakin knows Ahsoka is still out there, and is helping her in what little way he can. It's great because even if, say, you had no idea that was playing off another scene, it still works as a moment on it's own. And then it's even better, because it adds a little bit of extra content to the scene in Return of the Jedi - was it the Anakin in Vader that made him allow Luke's ship to land?
Compare this to, say, "Hey remember when Chewie got a medal? He has a medal now" it's like night and day.
Also it's nice to see someone actually take spice from the spice mines of Kessel.