I'm not sure if I would prefer cell or cg. I'm loved G1 & I love cell animation, but, I love BW & cgi can be cool. Maybe cell shaded if it was cg. The guy/guys that drew up the designs though, are the same ones that did Ben 10 & Teen Titans, which is one of the reasons I would've prefered something more along the lines of Justice League, which, even that, isn't super detailed. All of Bruce Timm's stuff(aside from the little work he's done on Teen Titans) was simple, but, not as simple as TFA. But, I'll deal with it.
I haven't really watched Teen Titans myself, but, I've heard that it got alot better over time. However, I don't know if that means the character art, or the story. Probably means the story.