Australia is preparing to change over to the Slope system in about a year or so. The difference to many U.S. clubs is 99% of Australian courses that have membership (Private, semi-private, etc.) have a member’s competition every Saturday & a mid-week one as well. On top of that, most of these clubs have Sunday comps & some even have 2 mid-week comps. I know of a couple of guys who mostly only ever play at their respective home courses, yet still play around 120 comps a year.
I have always felt that this will stop many of the ‘vanity’ handicaps that may appear due to the adoption of the U.S. system.
With regards to Sean’s initial question, it would be difficult to change culture concerning par & the length of courses, as these things are so ingrained into golf culture these days. In saying that, I often play golf without scoring or having any idea of my score, & without any wagering involved either.