That is most likely a waste of time and bandwidth as your system would contain exactly that.
In my opinion - no.
What could be an idea, is to schedule - at regular intervals - a copy of your package list and personal configuration - just as a precautionary measure - just an example [root tip] [Utililty Script] Backup configuration and package list and if you want to make sure no systemfiles has been altered outside package sync you could look towards these pages