Third option, although I know no one will agree, is the larger closet, as in the second drawing, a tub/shower combination, and double sinks. Although everyone seems to prefer a separate shower and tub, the combination would allow for both more closet space and a large double vanity. Of course, it’s a trade off. Just another idea.

I'll go for the 4th option: larger closet, no tub, walk in shower.

How about option 5.

Make your bathroom 6 feet wide. Take one foot from the pantry and the master closet.

Do a 3X6 shower, no tub. Have the door to the bathroom set into the hallway to the bathroom so that it does not open into the bathroom.

What does the existing house plan look like?

What does the entire addition plan look like?

If I had to have a tub then I would go with the smaller closet with double sinks. Neither me or my DH have a lot of clothing. We do use the sinks often at the same time. But if it were my bathroom I would go with what jmm1837 said and forgo the tub and have the larger closet and double sinks.

No way would I make the pantry smaller.

Bath 2 seems very cramped. I would give up the idea of a separate tub and shower going with shower only or combo. My DH and I don't use the sink at the same time so we share a sink with a larger counter where my space is left of the sink and his is on the right side. 

Another possibility would be to use a pair of reach in closets flanking a hallway to the bath. Those reach in wardrobe cabinets are more efficient storage than a walk in closet

I also like jmm1837’s suggestion, especially if there is bathtub elsewhere in the house. Even if you don’t have a lot of clothes, a big closet is much easier to organize and much nicer to be in. I would sacrifice space in the bedroom for a more spacious place to get dressed.

Clothes do not hang like that.

There is no one right answer to this question. It depends on how you live.

Have you measured how many linear feet of hanging space you actually require? Until you do, you won't know if your closet is over- or under- sized.

Do you like taking baths or showers or both? If only one appeals, you can gain space by losing the other. You aren't required to have a tub and shower in every bathroom. As long as you have at least one of each in the house, resale value will be fine.

Are you getting a double sink because you live that way or because "that's what everyone is doing"? Would it be better to have one sink and more storage space in the large vanity?

If this were my home, I'd have a large walk-in shower, no tub, one sink and 24' of hanging space (2x6', double stacked). But that's me. YMMV.

No tub, two sinks, big shower. (But I'm fine with putting some categories of clothes in a room other than my primary/owner closet so ymmv. And the other bathroom on the floor with bedrooms in my home has a tub. I would also sacrifice bedroom space for larger closet and bathroom - I just need a king size bed, 2 nightstands, wall mounted tv to fit in the bedroom.)

Here's option 6. I think if you each have your own RIC you'll find it works much better than a combined WIC. Is there another way into the kitchen besides that door on the bottom of the "L" shaped hall? As I look at plan B, you could slide the pantry into that doorway/hall area, and gain enough room for a WC to hide the toilet. Then the double vanity could center on and fill the space between tub and shower. You might even be able to enlarge the shower some. Your doorway into the bath would be about directly across from the toilet's present location, and your two RICs would be north and south of the hall into the bath. All depends on other access to the kitchen. Here's a rough approximation of what I'm thinking. May leave a lot more space to play with as you plan it out. Could make room for a luxurious bath for your suite.

Thank you for all the great feedback! I’ll try and respond to each question. Editing to add: my husband loves having a bathtub, and I hate having a combined bathtub/shower (that’s what we currently have in our only other bathroom), which is making everything more complicated, I know.

Clothes can't go around corners so in all your iterations, you'll only be hanging clothes on the one long wall or the 2 short walls.

We opted for a bit more room in the master bath bc we are often in there at the same time getting ready for work or bed - we are almost never in the closet at the same time

Mark, fantastic idea! It makes a lot of sense that the hallway eats up square footage that could be used in the rooms. Thank you so much! I will explore this layout and concept.

Mark's idea!

But where does the canned vegetables go? And where do the Mint Milanos get hidden?

Mark - what kind of savage hides Milanos 🤣? Or, better yet, what kind of person actually has Milanos left to hide? 😜

This savage, but I always find them.

I am very proud of myself that at home a bag of Mint Milanos can last up to four days. I can not say the same for when I am traveling. Don't tell my wife.

Well, 4 days is quite a feat - 👏🏻👏🏻. Travel doesn’t count, right? Don’t tell my husband.

Tricky question. I think it depends on your personal lifestyle and daily function. Ask yourself do you need/want alot of clothes storage? Is having your own sink a positive experience you want? Do you take baths frequently and is this important to you. For me, we don't have alot of clothes/shoes so closet is important, but not as important as having my own sink. Being married 46 years I learned long ago I don't like to share my toothpaste or sink space! I also don't take baths but love a generous shower. Be honest with yourself on what is important and functional in your daily life. Afterall your bathroom is a one of the only rooms you visit multiple times a day, it should meet your personal and individual needs if you have options. Good luck!

Is a walk-in closet that is only 7'8" by 5'6" (first photo) even worth considering for 2 people to share if there is no space in the master bedroom for a dresser? I'm thinking more about how much space a closet system would take up in a closet that small, and I'm wondering is there enough space to seriously consider that option?

Standard reach-in closet is about 6 feet long, which gives 12 linear feet of hanging space if you have 2 bars. If you have >7' wide closet, you have room for hanging space on opposite walls-- in your case that would be 2 walls x 5'6" x 2 bars = 22 linear feet of hanging space. Consider how many linear feet of hanging space you currently have and whether it meets your needs. Then you'll know if 22' is enough.

My master closet is 8' x 5'8" if I recall correctly. There is no way that it would be large enough to share! Not going to happen.

On the long wall is shelving, a built in dresser and hanging for long clothes.

Opposite that is the door to enter the closet and a 12" deep shelving unit for shoes.

Along the back short wall is hanging.

Here's the hanging along the back short wall with the shoes on the left.

Shoe rack

Looking in from door into closet.

We do have room in the bedroom for a dresser which is what DH uses. He also has a 6' long reach in closet opposite mine.

I would hate a trough sink. Seems like the vanity is all sink, no countertop space. I like my countertop space.

do you need two sinks, or two places to get ready? I much prefer one sink in the middle with countertop on each side.