Hall BR sink vanity
Tile from floor up the tub and then the high rail like look, maybe we could have a fiberglass enclosure with these added ideas to make it look upscale.
Hall tub cubies
behind the sink/vanity/mirror into the studs for extra storage...
skinny blue tile only part way up around tub.. may be a cool idea.
japanese tub.. and shower... too much but cool.
mirror that opens and a shelf built in above the shower
color of wall and tile.