That's just nostalgia talking. New stuff doesn't feel like old stuff to you because
you're older. Many a YouTube commenter has fallen into this horrid pit before you; I suggest you climb out.
Personally, I think there's a lot of fantastic things going on in the world of animated television right now, including the three already airing shows mentioned above. Wander Over Yonder is going to be great too, in all likelihood.
Blergh, off-topic post.