[rschiks]

New series are in folders named "current". Older series are in folders called "older". I set smartplaylists filter to " path contains" and create two playlists, one for current and one for older. Then set a menu item for each to separate old from new.

Thought so

But suppose you only give your series a tag (and leave them in the current folder) and within series (xl) you can select a tag and it would display the series with that specific tag, wouldn't that be better than going first to the smart playlists menu option and wouldn't give you the same view as the series (xl) view anyway?

It's possible (according to Kodi's api) to also set a tag, so from within the app.

It saves you things like moving series between folders.
And when you use tags you could also mark them as "ended", "watch again in the future", "for my wife only"

Just some thoughts.....