Finished it last night, I thought it was pretty good. I've watched TCW but not Rebels but did research on Rebels so I wasn't lost. The Clone Wars flashback ep was amazing.
I'd rank it above Boba Fett and Mando season 3 but below Mando 1 and 2 and Andor.
The space whales and zombie stormtroopers didn't bother me as much as some (Especially given the Night Sister's involvement with the latter). Why did Enoch look like Darkseid though? That was weird.
I thought the crab people were kinda cringe at first but then I thought of South Park and it made it funny.