FWIW, there is TONS of both plot and character development in Vox. It is worth giving it another go. But it is also loud and crude and if those things turn you off, they just do.
How long did it take to get there? I think I watched the first couple (maybe only 2 or 3?), and was just bored. Honestly, if it was more crude it would have been more interesting to me.
FWIW, I love Rick and Morty when they do gross stuff like the Raising Gazorpazorp or the fantasy land episodes, because I like the way that they play around with the source material and make interesting plots out of it. But things like their Hellraiser episode bore me because they didn't bother to understand the source material.