User blog comment:DiegoAnime3000/RWBY Volume 3 Opening Scene is complete/@comment-25405817-20150612142856/@comment-10380701-20150612160353

I don't think it's the norm. Because depending on the anime, the change may not be audio, but visual.

Like, the entire intro is redone, but the song used is still the same. It's rare, but the vice versa can happen as well.

That said, changing an intro is probably a good thing. If the song is hype enough, I don't wanna get tired listening to it for such a long time.

Cartoons are a bit different. Unlike anime, cartoons create a more catchy, memorable intro song, rather than a hype ass J-pop song.

End result is that the X-Men theme song and the Spongebob theme song are immortalized in the brains of both the previous generation and the current generation respectively. >.>