Towards formailty for a few reasons:
Augusta National...they, like the keepers of many links (Birkdale for example) saw Augusta on TV and forgot all about their roots, and what made them special. The fed and watered to achieve The Green and Formal is good school of maintenance.
Polish everything...isn't it human nature to have things clean and polished...it's also easier to measure if someone is doing their job. With time, you can forget about your roots, and evolve towards something else.
Could be due to reduced resources from the war, but wouldn't ragged be easier to maintain on the large sandy wastes? And easier to restore when the club had funds? Then again, it would have been easier to just mow the areas which grew in...hence shrinkage of waste areas.
Bunker reduction could have been the result, like on 8, of the need to reduce maintenance.