The stairwell is the only place in the bus that I have found any corrosion and I was planning to move the door back to the middle of the side. I'm currently planning to build a smaller stairwell (since the door will open outward rather than folding inward). But if I could have that floorspace back it would help tremendously as I am fitting quarters for 2 adults and 5 kids.
I've seen some coach conversions with steps that extend outside. We are staying this week in my parent's 28' RV trailer and it has steps that fold out below the door. But with the trailer, you'd always be entering first from the outside (rather than riding inside the trailer) and it's easier to do manually than from a bus.
Any reasons I am missing to leave it inside? (I am not nostalgic for the stairwell