IMO toilet rooms inside a bathroom are just plain silly. No one should be using the toilet while someone else is in the bathroom. As for the rest please post a to scale floor plan of the whole area you are tlking about . That is the only way to get any advice as to what you are planning.I actually dislike huge bathrooms IMO they are a waste of space and who wants to clean a huge bathroom all the time. I have a small master bath with a showe, nice vanity and a tolilet and have no intention of enlarging that for resale to some imaginary buyer down the road. We are empty nesters and live in a large house that takes enough cleaning without a bigger master bath. we also have a main bath still 5 x8’ with atub/ shower and a 1/2 bath in the walk out basement , all the cleaning I want to do in bathrooms . IMO a big kitchen trumps a big bathroom every time.

Can you post a floor plan? Maybe someone will have an idea for you. Today, most people want a master bath - many of which are quite grand! I don't think a grand main bathroom, even with separate toilet and shower rooms would have the same appeal.

So losing one of 3 bedrooms to create a master is better?

I will create a layout to add. Thanks

I’m not a professional but here is my current house layout. It basically a prefab home if 2 boxes with all the plumbing on the north side box. I am okay with losing a bedroom upstairs as we have a couple in lower level. But would like a master closet and bathroom and keep a decent size guest bedroom. Working with smaller budget so trying to keep plumbing close and also not affect lower level ceiling space. The current rear entry is borrowed from garage so was thinking if moving laundry to eat in kitchen space to give garage back it’s space and create a barrier between bathroom and kitchen as you can hear what goes on in there. Lol

I am not seeing another dining area in your drawing above so not sure that would be a good return on investment to eliminate that. However, converting your closet into another full bathroom would add value even if it was on the smaller side. Rather than losing a bedroom on the main level you could steal space to add a closet adjacent to your bedroom. That bedrooms closet would have to be removed for a walkway but you could replace with storage towers on the wall opposite the door. (Ikea)

You would have to get creative with storage in the master bedroom, adding a storage bed or additional dressers but having three bedrooms on one level is a desirable feature for future family buyers.