If tiling a shower, I highly suggest looking at porcelain with a cof rated for wet areas. Stone is porous and can be problematic in showers. Also if going with a custom tile shower make sure your contract calls for acceptable waterproofing. Cement board is not enough. It needs poly behind it or a topical membrane between it and the tile.

a bath center is always a wise choice. Or a designer working with an architect and your chosen GC.

You can post your floor plan here for some opinions but do not use the forum over real pros.

The most important thing to think about is why are you upgrading. Are you just trying to make it prettier or are you hoping to gain function. What works and what does not work in the present bath. Door styles, tile, vanity finishes all follow your design plan. Work on a good layout first. Than shop according to that layout.

If you are spending upwards of 30k I would not make vanity decisions based on your old floor. You might want to think about heated tile now aswell.

I'm not sure where you live, but we gutted and remodeled three bathrooms (including moving walls and moving plumbing in the concrete base), replaced two picture windows, knocked out a window and wall to install a large double door, and replaced every door and door hardware in the house...all for $60,000 in the Texas Hill Country. We did not have any plans, but this was not our first remodel. We found the best GC in the area, waited until we could get on his schedule, and went for it. He came in, we waived our arms around and he took notes. It came out perfectly. I lived in the house during the remodel, so that cost more for them to not gut all the bathrooms at one time. Here are a few tips.

Trust your GC to have a good shower installer.

As mentioned above, be sure to look at the wet cof (coefficient of friction) for your shower floor tiles. We picked a smooth tile (not glossy) that just seemed like it would be slippery when wet, but the wet cof was very high. Sure enough it worked great and was never slippery. Unless you are at a Daltile shop, the sales people do not know what the cof is, so you have to educate yourself. The box of tile should have wcof and dcof printed on the side.

I like Moen faucets everywhere because you can get the replacement valve for about $10 at any hardware store. Never had to replace one, but at least I don't need to find a specialty plumbing shop to get parts. Delta and all the others have different valve models for every faucet and every year requiring a heavy catalog of parts. One O-ring might cost $10.

Look at having cabinets custom made instead of off the shelf. Ask your GC for recommendations. The cost will be very similar and quality will be better. We did not get plans for our cabinets either, and ours are very different from any you can buy.

Modern porcelain tiles are laser printed with designs that look exactly like stone, marble, or wood. You need a magnifying glass to see that ours are not real stone. Check to see if you have a Floor & Decor store near you. They are a tile superstore with an eye watering selection of tile, stone, wood, and laminates at rock bottom prices. We picked tile with a green appearance of limestone and found a wood look tile with a similar green cast to it. The tile looks brown installed, but the true brown tiles looked horrible next to the greenish stone look tile.

If you are going to open your walls, add electric outlets. We have outlets at both ends of the vanity, but we forgot to put one on the wall by the floor (facepalm). Every now and then we want a space heater on but only in the bathroom. No outlet.

Pay attention to where the door hinges go on the shower door and on the entry door. Do you want the doors to open inward or outward? Left side or right?

There are some very quiet fans on the market. Get one bigger than you need. Ours keeps the air clear during the hottest and longest showers. You can feel air coming in under and around the door. We also redid our HVAC in the master suite so we don't have much air movement...which means I sometimes leave the fan running for days and days to bring in fresh air. It is quiet enough to not bother us at night.

Use LED lighting. The bulbs are slightly more expensive, but mine have never burned out in 10 years.

We have never had dark, granitey counter tops, so I just recently learned of a problem with them. My daughter has dark granite with swirly patterns in her kitchen. You can't see the spills on it. She had both jelly and chocolate spilled on hers, and she thought they were clean. I found out when I tried to wrap a package. At least with a uniform pattern or lighter colors, you can see what needs to be wiped up. This goes for the floor, too.

Don't enclose your shower all the way to the ceiling. We had a problem with air flow in ours before we opened it up. The shower would get moldy. After we opened it up above 6.5 feet, the mold never returned.

We had an open space in a corner that is just lost space. Since it was unusable, we had our cabinet maker make a medicine cabinet that is 8 inches deep (normal is 4). It's great to have the extra volume.

Get drawers that pull all the way out so the back of the drawer is even with the front of the cabinets. If you don't specify, they will install glides that leave 4 inches under the counter. Stuff gets lost back there.

Listen to Roarah, she has been thru it and came out on the winning end. after some real hardship.

Here is A free tip to anyone having a bathroom built or any tile work done. have this sentence written in the detailed scope of your contract or find someone else..

"All tile work to be performed must meet TCNA, ANSI, IRC ,UPC, IAMPO, specifications and standards as well as all MFG installation instructions throughout..."

If you are north of the border add "TTMAC"

This will force your GC to hire a competent tile crew, and your tiler to do it right. If they fail you have some/more recourse.

Dont ask me how I know all this.

https://www.houzz.com/magazine/how-to-choose-tile-for-a-bathtub-stsetivw-vs~3148174

Read this forum for 18 months. Or hire a Kitchen and Bath Designer.