The show
just started, give it a chance.
Its not like you missed it and its too late to get into. The plot is vaguely interesting: The immediate events following Order 66. Any Star Wars fan would want to know what happens. Although the show is kinda slow. Hopefully it starts to pick up.
Yes, its a little soon to be dropping money on something, without knowing how it turns out. It could be TFA again. Ironically, Echo is probably the most least interesting character in the whole cast, including Omega. Everyone has a quirky character trait and then Echo is just....there. Not much personality.
Echo could have PTSD or something, that would make sense. He was a regular clone, he got severely injured and then put back together like Robo-Cop. He might be a very engaging character but so far hasn't made much of an impression.