Your sliding doors will have a fixed segment, so you will lose some of the 'open' feel. If you do not have two open sides, then you should not…

We applied to council to have our address changed. They notified gas, water etc. about the change, so was an easy fix.

I'm not sure what your current toilet's entrance layout is, but could you try this? Or put the shower in that corner where the toilet is.
I like the vanity…