Hi Ricardo, Happy new year!
You can create a custom UI on the publish plugin, but not the item itself. A drop down of playlists should be fairly straight forward once you understand how to had a custom UI which I provide an example of here.
You can’t disable the notes on items, but you could choose to ignore the entered description in the publish plugin. You should be able to access the parent item via parent
, so it would be something like item.parent.description
I think.