[rodainas]

I don't know if this could be possible but it would be nice to have an option (for enabling or disabling) to show at the end of the home widget rows like a "show more button" to expand it the list provided by that widget on a normal library view.

I'm not sure if it's possible to do. I must check the other skins out there if any of them have this implemented. Someone mentioned this idea before but I have not enough time to explore this.
From what I know it's possible to enable in TMDb Helper widget settings. But it will works probably only with TMDb Helper widgets.

I understand, I have seen that working on Auramod but with library widgets, on addons it makes sense that the video addon must provide the opcion like TMDb Helper.