Shower enclosure ceiling height

[cully]

I have a room 3000 long x 1400 wide 2700mm height which has a shower enclosure, pan and basin
The shower enclose I want to alter to be a walk in wet room about 1200mm depth but I am trying to get my head around the ceiling height as I think it would not look right being about 600mm above the glass screen.
I have thought about dropping the ceiling height to about 2200mm through the area of the wet room but I am unsure how I could form the ceiling which would give me access to above for plumbing electrics etc but the outer edge would look right as seen from the room.
Any ideas appreciated

 

[dontbelieveawordofit]

it’ll look top heavy and irregular.
is this your own idea or have you seen it somewhere else?

 

[cully]

What I have at the moment is a shower door (1800 X 750mm ) in a stud wall, as attached.
The depth of the shower floor is 750mm but by removing the stud and pinching some of the room I can increase this depth to around 1400mm
The reason for the change is medical
Thanks