Back to the main thread, it is quite a chore to have a balcony or catwalk put in, and a great deal of money. Unless it makes money, it is a hard sell to the people that make those decisions.
Especially when its simply a matter of time savings, not anything that can make them a good deal of money. Ya, you will need less labor, but odds are they can pay for the extra labor for 10 years before it balances out.