I gotta agree on the RD front, throughout the entire run of G4 I disliked RD to the point of physically cringing when she was on screen more often than not. Some of her appearances were ok to good, especially her development of learning to love reading and her interactions with FS, but more often than not she was so obnoxious and brash and overly stereotyped it just made me hate the character archetype. I’m sure a lot of it is to do with the meh writing because she definitely had potential to be much better. It’s like they tried to make her disliked.
Zipp, though, is how you do it properly; Zipp wound up being one of my very favorite characters from the new gen already. A very versatile, well balanced, and likable version of the character type with great depth.