Thanks so much for your input everyone! Bevangel, special thanks to you for modifying my picture. It definitely helps to have a visual! I think moving the doors further into the hall will work, and should be very easy for the builder to do. We'd lose a little more exterior hallway space (the bedroom doors were originally at the dotted line), but having the longer hallway within the master bedroom will be more dramatic. I love this website! I'm glad I finally decided to join and stop lurking. ;)

I like that plan a lot Keywest, except I would probably nix the window in the closet. Another design we are throwing around. Pretty much checks all the boxes. Door location is not ideal but workable. I really like how this one and yours above has everything open and allows for sunlight and a view no matter where you are in the bathroom. (Except on the toilet of course. lol) This design has a large closet door, and equally centered windows which is great. The toilet is right when you walk in, but I think by putting it in back in the alcove, and opening the door away from it like this, it wouldn't be too bad. Our current toilet is literately the first thing in our bathroom and it never bothered me or even occurred to me until you guys mentioned it on one of my plans. Not a deal breaker. This is my dream bathroom. I love the marble, grey vanity, bench, and especially the pony wall between the vanity and shower. What I'm imagining with built-ins above the tub, marble, and large windows. Our furnace is direct vent, and we are really limited on where we can put it due to crawl space issues. Pretty much have to put in in the addition, as per HVAC guy. Putting it inside the closet inside the bathroom on the far side is our best option. CO2 detectors are a must.

Can you solve the door issue for Room C by making it an outswing? When open it would then be against the wall with what I assume is some kind of air return / chase. In your bathroom you might also gain some privacy for the toilet by pushing the shower up towards the closet and then putting the toilet on the shower side. Then you can put the linen closet or cabinet across from the toilet (that could also hold toilet paper for when you realize you're out ;) Would be shallower but the back of a 40" deep linen closet would probably be fairly inaccessible anyway. Would perhaps be less private when using the vanity because of the mirror, but do you generally use the toilet when someone else is in the room anyway?

Maybe you could take the small closet across from the entrance to the SE bedroom and combine it with your current master closet? Then keep the window in the bathroom by installing a pocket door into master bathroom, or maybe a barn door? That way you can save a little space. Move shower to external wall corner where there’s currently the small closet near the entrance, double vanity along new wall? Then you’d get light from the window bouncing off the vanity mirror. Maybe it would help the bathroom look bigger too. You probably already know this, but trying to keep plumbing where it is as much as you can will save you a lot of money! More money to put into finishes, or another project! Good luck! Remember, there are many good choices here, not just one!