I can't imagine Rebels did as well as TCW in terms of ratings either. TCW had the film to launch it, and there was just a lot going on. This feels very different.
With TCW, it seemed like LFL was looking for "the next big thing" for Star Wars. With SWR, it seems like Disney is just looking for a bridge to the next big thing - Episode 7.
Rebels just seems like Disney's way to get kids introduced to OT things - TIE Fighters, Stormtroopers, The Empire, etc. That's why it won't surprise me if teenage Princess Leia or young Han Solo and Chewbacca end up on this show so kids learn who they are and what "the rebels" are all about to get them primed for Episode 7. Even a trip where Kanan has to visit Obi-Wan on Tatooine and Ezra "accidentally" runs into 13-yr old Luke on an adventure wouldn't surprise me.
Yeah, I agree that Hasbro/Disney are missing the boat by not having a bunch of stuff ready for Rebels launch... but I always kinda got the sense that Disney/Hasbro was happy to miss this boat (putting Rebels figures in with Legends figures... again seeding the kids with OT stuff) while they construct the SUPER-MEGA-ULTRA-SHIP they will be launching this time next year.