Our master ensuite renovation was a bit of a tagalong with our guest bathroom remodel. It looks so much more spacious than it originally did as we removed a shower/bath combo along with the half wall and bulkhead surrounding it. I am astounded at how different it looks although the layout is pretty much the same as it originally was. Keeping the toilet and plumbing in the same locations is a huge cost saver so if your layout works, I say keep it.
For more details, visit the Master Ensuite Renovation post.