Our new build master is similar to yours and I was concerned about seeing into the master from the hallway also. But, like yours, we do have a door to close it off . Also, like yours, the actual room area we will be using is offset to the right. The only area that will actually be seen from the hall is kinda a walkway into the master. In that area I might put a table and lamp against the wall on the left. That's all that can be seen from the hall.

I know this didn't answer your question, but with your layout, I wouldn't change anything.

I like that you are thinking about moving it. I wouldn't have caught it in my own floorplan. However, thinking about how many times I have barged into our room to find my wife only partially dressed, I can confidently say I have saved a fortune on apology jewelry (and maybe therapy), by having my sons on a different floor.

This is a fairly low impact modification, you have a sight line from the family room but it is to an area no one would ever be standing in really. You are really only extending a wall into the hallway 14" and widening the family room by 10"

I feel getting a bed through the door in that design suggestion will be difficult. Maybe just get a nice door and keep it closed?

See, that is exactly the reason I dropped out of architecture school!

Edit: I think you are actually fine on the bed. You have over 8' 7" of clearance for something 12" deep, and a dresser 22" deep and 60" long will easily fit. If you are worried about it, you can always move the wall out to the original hallway position. Giving you 48" of space between the door and the wall. This again will change your plan only a little, and give you plenty of space for furniture moving.

What about taking the space for the built-ins and putting the vestibule there? If I'm reading the plan correctly, you have 3'10" there, plus you could use part of the 4' for the original door. You would walk into your bedroom facing your closet wall. Would that work?

The vestibule in your photo is lovely!

We have a very similar setup as the photo above in our current house. While I'm sure it met codes regarding hallway width, etc, it makes it very difficult to move bigger furniture into the master bedroom. I won't be repeating this layout in our new home.

Did not read the other responses. But you will regret making the entry into that room more complicated. There are other considerations like getting a king bed in there and a bathtub etc.

We are now thinking that we will keep this opening as is, but possibly adding some casing where the bearing wall ends below the built in, and opposite of it. This will give an 'entry' look like the picture, even if the door is simply behind it, vs. a cabinet as in the picture. We have not decided if we should do that where the small wall currently ends, or bring it out to match where the foyer wall is.

If the bedroom door being perpetually open allowing the view into the room is going to annoy you, put a soft closer on it.

Not that you should do it, but getting furniture in it will not be a problem. If getting a bed through a 3 foot door into a 4 foot hall were a problem then no one could ever live on any second floor. Also, not sure how getting a bathtub in would be a problem, unless your bathtub is 9ft long. If a bathtub will go through a 36" door it will go through a 48" hall.