Too open ended to be accepted. Also, opening 001 to plugins generically is not very easy due to the tools being used. It would be best to limit feature requests to things that most users could benefit from.
This is an example widget to show how the Right sidebar looks by default. You can add custom widgets from the widgets screen in the admin. If custom widgets is added than this will be replaced by those widgets
Too open ended to be accepted. Also, opening 001 to plugins generically is not very easy due to the tools being used. It would be best to limit feature requests to things that most users could benefit from.