Some interesting things happening in this one. The box they stashed Maul in is explicitly called out to be some kind of Mandalorian Jedi cage. Makes me wonder if it blocks their ability to use the Force in some way, or if it's just so restrictive that it limits their options. Definitely seemed to have Maul locked up tight, however.
I admit to being a little bit surprised that they had Rex turn with Order 66. I don't know why, but from Rebels I kind of pictured it as Rex had his chip removed BEFORE these events, taking Fives' warning to heart even if he didn't believe it himself. I honestly think this worked better. It was nice seeing Ahsoka try and save Rex. And she was careful not to harm the other clones more than she had to, which was a great touch. I was actually a bit taken aback when Rex was so willing to fire on his own men after he woke up, but I suppose he knows just how dire their situation now is.
So, we've had Rebels, Rogue One and Solo call outs in these episodes. I wonder if they'll work in any more in the finale.
Also, is this the first time we've seen a C1 droid other than Chopper? I liked this one, with the rounded dome instead of Chop's more boxy look. Cheep isn't the best droid name ever, however.