I think so too. The series weren't affected. But it depends on execution. Or else it would start these fan complaints that such a character overshadowed another. I am not really against it. rather a poor execution.
Young Justice could be good. I would have gone with Justice League too. But one can see that Justice League characters had some oddly proportioned physique. Their design. Making it look a bit cartoonish. But the animation was so good that it looked really good.
Make them look more human. And get that kind of animation. It works out fine.
I am not against other animation styles. If they make a good cartoon i will watch it. Its simply what i would prefer.