Ho, there. I’m changing this topic category into normal Game Development instead of Game Dev-CScript help.
If you take a look on this thread, updating an already published work is definitely possible. Importing stats are also done in several Hosted Game story as well (The Lost Heir).
However, I don’t think ChoiceScript is the best prog. Lang for your case. Publishing your games at here can take some time, due to the amount of various games submitted by authors, thus you have to wait in-line among them.