Personally, it's better to have a wall between the bathroom and the toilet so no one gets walked in on. Definitely a good idea to keep the bath in case of reselling, although are you planning on going anywhere? If not, get rid of the bath and get a bigger shower I think.

always prefer separate toilet with handbasin, the bathroom has plenty of space for generous fixtures up to the sizes shown but the bathroom should be planned to suit potential users and relative to the whole plan (where are the windows?) next door rooms, orientation, outlook etc...this is one suggestion that has the best view on entering the room with the shower (tallest) at the side, bath with potential view, vanity with option for two basins and matching mirror doored wall cabinet and the toilet handbasin next to the shower keeps the plumbing sounds away from adjoining rooms more details may inspire other suggestions

When we lived in Australia, we had exactly the same problem with our children's bathroom. We changed the wall between into a low pony wall, and converted the window behind the toilet into a storage cupboard for toilet paper and other bathroom supplies. We also put in a pocket door like you have and a fresh new shower curtain over the bath/shower. I've attached some photos which I hope helps.

I can't get the picture to blow up big enough to see much , but unless you are running a backpackers , I would suggest 1 bathroom for 3 bedrooms would be all you need , in fact unless you are having a 'grannie flat' or similar built in , I would think that 2 bathrooms and a 3rd powder room with its own handbasin would be all you really need . Of course , more is more luxurious , so having a second ensuite is good , having a shower and WC in every room has advanatages , mind you so does having another with a bath and twin showers , 3 seperate WC's in case you have 100 people visit , a seperate spa room with its own shower and toilet , a sauna , an outside pool with its own male and female changing rooms with showers -- in other words , do what YOU want once you get past the basics . And I'm not a fan of two doors from 2 bedrooms into a bathroom -- especially if there is a bath or shower and a toilet -- it relies on everyone working together , but also on everyone pushing the right combo of locks so that there's no accidental walking in on someone .