Yes, this is a fantastic idea! Whoever created the package manager and ACP page should totally do this 😄
... what? What do you mean it's me? 😦
Edit: Please add your suggestions here 👍
Perhaps sooner or later this will be built into the ACP; With various options selectable, you can backup and dump your database (even remotely, but its just an idea), backup your plugins/themes (incase you've edited them and need them saved), and your assets e.g.
For now you can do all of this semi-manually and it is documented here:
@trevor Thanks for your information.
I have a script that runs every day that backs up my database.
@Scuzz Can you share it?
Thanks a bunch!