I don't see the photo with the curtains.
It soulds like you like the existing shades,
BUT, if it were mine,
I'd replace them all with bamboo Top Down/Bottom Up shade Blinds.com
You will be able to open them for light control & privacy with a center band of shade around the room adding texture ... no need for drapery panels, as they would cover too much of the windows.
I would add a large area rug to ground the space. Nice room.
Q