Bathroom upgrade question

Not a problem if you have a tub in the other bathroom.

I don't know the answer but we took the gamble. We updated all three of our bathrooms. The two guest bathrooms have regular tub/shower setups. My master had a massive jetted tub. I didn't want the big tub and wanted a shower. Like you I didn't have the configuration for both. So we built a huge (4'x8') walk-in shower with rain head, regular shower head, and a bench with a handheld shower setup.

I love the shower. I hope not having a tub in the master bathroom doesn't affect potential resale but with the quality of the shower and the bathroom overall, I can't imagine.

Someone once told me to approach making changes to your own house with the attitude that you are going to live in it forever. Do what will make your home most enjoyable for you, and don't be concerned with what some future owner may or may not want. I followed this advice a number of tines and it always worked out.

We bought a house as you're describing and do not miss a tub in the master.
The PO sealed a hall closet and extended shower into that space. The shower in the master was our preference as purchasers about 10 years ago.
We replaced everything in the other bathroom, which included a new tub/shower.

Personally, that would be preferable to me if I were looking for a house. I'd much rather have a giant comfy shower and no tub instead of a huge jetted tub and a coffin shower.

I lived in a house for 5 years that had the giant jetted tub and a coffin shower and I can count on both hands the number of times my wife and I used that damned tub. I hated that tub. Give me a huge walk in shower with a rain head mounted HIGH. The 6 and a half footer you sell the house to will thank you.

Of course, others may differ. YMMV.