The sliding doors were the whole problem
The room started with a framed sliding shower enclosure over the tub — the arrangement that was standard in San Diego County housing for decades. It works, but it collects water in the bottom track, the frame corrodes, and the panels cut the room visually in half.
Removing them was the decision the rest of the project followed from. Once the doors go, the surround has to be rebuilt to take a curtain rod instead of a track, and the tiling has to run properly to the ceiling rather than stopping at the old frame line.
So the room came out entirely: tub, surround, vanity and fixtures. What went back in is a plain, well-built arrangement designed to be easy to clean and hard to date.