I mean, you can argue intent vs. nature on that, and I sort of agree, but Rebels primary failure isn't on the intents of its villains, but rather on the character of its heroes.
(and the art, but that's taste)
Hera and Sabine are great support characters and Chopper is far less annoying than C3PO. Zeb is the odd ball for me. But honestly the crew is out to screw with the Empire and has killed many Imperial Pilots and crew members when they destroy imperial ships.
The characters also were rough in the beginning but like most stories that is how many characters start out and after the last extended episode I think they got their stuff together. Darth Vader put the fear of the Dark Side in them something fierce and now they are scared. They can't go back to Lothal anytime soon so all new worlds coming and we are going to see the very first B-Wing.
Edited by Beatty