I routinely make diamond on nights, between 60-80 a year (usually though between 60-70), but with spend definitely below 18K. If accurate, these changes do nothing for me but disincentivize me to stay loyal after hitting 42 nights, if that. With a huge chunk of current golds on stays/spend soon to become diamond, and a much smaller group of higher-spend diamond moving up to the new category, regular diamond benefits are going to be even more useless.

This feels like half of a good plan. You need to give something differentiated and worthwhile to top customers, but continuing to hand out diamond status for the price of a CC AF devalues true diamonds. It's a head-scratcher...