[Karellen]

Ok, I understand what you are trying to do.

I have not used Nodes (strange as that sounds) so I am not the best person to help and promote them. Personally I would go with Smart Playlists and add them as menu items. Have a read of this... Custom home items (wiki)

The whole moving items when you have watched them is a strange setup and adds more work and complexity than needed. If your only concern is losing watched status, then two ways to avoid this...
1. Export your library to Separate Files on a regular basis... Import-export library (wiki)
2. Used WatchedList add-on and set it for regular automatic saves... https://kodi.wiki/view/Add-on:WatchedList

Of course I am assuming you have built a library, and not simply using Kodi as a dumb file browser.