I think one of the the thing that keeps holding CN down is what I call "the TTG (teen titans go) strategy". As in focusing on humor directed to young audiences instead of focusing on story and characters. Of course there's exceptions to that (i.e Steven Universe) but for every show that focuses on story, there's 3 that focus on humor, not bad in of itself, but it needs to be done right . Now, if we look back in time to the older CN, we can see characters that have motivation, heartfelt stories such as with the original Teen Titans, that kept you engaged.
TL;DR: It's about balance between story and humor, and right now, that balance is out of wack