You could hang, from cable or chain, a stained glass window in the space. You could do one window. I do not know how much money you want to spend, but you could have one custom made to fit in the area. Or you could hang several, vertically linked together to fit the area. With stained glass you could go very subtle and use clear glass or get crazy and use a pop of color. It would make a great statement from the entry way side. From the dining area, it would add privacy, but still let light into the dining area. At night during a lovely dinner, the lights or candle light would sparkle and play off the glass window too. Those windows are very heavy and would need to be properly anchored.