I'm currently in the process of creating an open plan dining area - I intend to block the internal doors leading from the sitting room to the dining area.
The sitting room get a lot of light all day - the advantage of the blocking off the doors is to create a seating area in the kitchen dining space.
I was thinking of adding a narrow high level internal window at the top of the existing door space to aid extra light. I have googled it and not seen anything like it which leads me to suspect its a madcap suggestion. Is this simply something thats not done?
Test out the light levels with a curtain held up fully over the doors and then in the window scenario.
I doubt there would be much light gain from high windows.
Why not consider a sliding partition so that you can create your seating area in your kitchen / dining space but can still open up all the rooms when you need or want to....it can be nice to close up areas in winter and open them up in summer.
As the opening is already there it would be a shame to block it up completely
Once you consider plastering, glassblock or window frame, I don't think the cost would be any more but it would allow for a versatile space. (My 2 cents anyway)
Each to their own thedaras, but I think they're horrid - even in bathrooms.
If you want glass then go for glass, but frosted or a lovely stained glass, but I would never advise glass blocks in a living space - totally unnatural and you would tire of them very quickly. Would you have them in your own dining room?