I strongly recommend Star Wars Rebels. In addition to being very well done, SWR is an official part of the Star Wars cannon. It covers events following SW3, after the Jedi Order has been destroyed, to before SW4, where Luke takes up the rebel cause.
If you want to watch a sample, you might check out the two part season 2 finale, Twilight of the Apprentice (s02e20 & s02e21), a very good story.
You can find it streaming in various places, or if you wish to download it, do a FileFactory search.
The 90 minute series finale will air Monday, 8:30 EST, on Disney DXD. Just noticed, DXD is currently airing a Star Wars Rebels marathon.
I honestly think you will enjoy the series.