This is actually my take on what the space will look like with a sectional (which we don't have yet).
We eventually acquired a couple of lounge chairs and a coffee table for the space and I decided to make it a little lounge/reading area.
The lounge area in real life.
But without a way to define where the living room ended and the lounge area started, it kind of just looked like a big room filled with furniture. Enter the low Ikea bookshelf that used to sit next to the carport door entrance. It had to find a new home when we moved the built-in over to that side of the room. Luckily, it worked great as a way to differentiate the living room from the lounge area.
I'm glad we could reuse a piece of furniture we already owned and I suspect the Ikea bookshelf will stay there for a long time...but...I still picture something a little more grand for that space—a floor-to-ceiling divider with a retro feel. This picture always inspires me when I think about it...
So I started to do some research about pole shelving (which is what this kind of style is called). That's when I came across ISS Designs and fell in love. They offer preconfigured and custom made shelving with mid century flair, including floor-to ceiling room dividers right after my own heart:
The preconfigured dividers here range from about $1000 to $1900. You can also design your own shelving through the ISS website and they'll come back to you with ideas and pricing options. Pricing also varies depending on what kind of materials you choose for the shelving (e.g., aluminum versus wood).
I think my next step will be to take detailed measurements of our space and try to design some shelving through the ISS site. Then I can see whether my design is more economical than the preconfigured options...