So Marvel legally can't use the original character names for Shang Chi's sister and father. The comics currently have those names as Zheng Bao Yu and Zheng Zu. To me, they might as well have used those names to help them stick a little more in the comics. Maybe they wanted to distance themselves even more from the original names, I don't know.
I've been thinking a little bit about a sequel. To me, the big aspect of the character missing is the whole espionage aspect of the original Master of Kung Fu. I'm not sure they're ever interested in going that route, but it could be fun. Probably my favorite villain/rival of Shang Chi in the comics is a character named Shen Kuei (The Cat). I also love the crazy James Bond aspect of Carlton Velcro. But that might be too over the top. I'd love Pavane and maybe Zaran the Weapons Master as other potential villains.
I suspect a lot of the sequel will deal with that signal the rings are sending off and I wouldn't be surprised if it's related to Fin Fang Foom. I'm fine with that, although I don't think we need every movie to devolve into "Shang Chi fights a dragon."