IMO master baths and master bedrooms should have the same design style and honestly without pictures I have no idea

The problem is that the colonial trim (builder-grade casing in just about every room) will not work in the new bathroom. We held it up and the scale is just off and nothing in the bath has any kind of bead or quirk detail that would tie into the molding.

Extending the bath style to the bedroom would work, it'll just be a few months before I get to it. That's the problem with the eclectic house design -- really tough to keep things tied together right.

More to think about. Thanks for the inputs.

Option 1 is fine. Don't see what the big deal is. In older houses, it was very common to have different styles (grades) of trim in functionally distinct rooms.

Here are the two side of the dining room/kitchen doorway in my house:

Dining room has fancy dentil molding, which is what's also in the foyer and living room.

Then you go through the doorway into the kitchen, and this is on the other side:

Super basic trim plus rosettes. Victorian equivalent of standard issue trim. This style is also upstairs (but not in the bathroom). They only went all out in the "public" rooms and then transitioned to the simple stuff for the kitchen because it's a kitchen.

If the standard issue trim doesn't work in the bathroom (a separate and functionally distinct room), then get the trim that works.

Typically the moldings would match because the room styles match throughout your home. Your best option at this point is option #1.