A shower-room layout does not have to remain the starting point for every future design. In this Bridge of Don, Aberdeen project, a B-shaped bath replaced the shower-room arrangement, retaining a wider end for showering as well as bathing space.
If you are reconsidering how your room is used, compare the routines you would gain with a bath against the dedicated shower space you would give up. Check getting in and out, internal bathing dimensions and the position used for standing under the shower. Decide what made the previous layout useful before checking where the new bath could realistically go.
That comparison keeps the choice personal and practical. The right direction depends on how the room should work now, rather than assuming every refurbishment needs to move from a bath towards a shower.
