The Case–Shiller housing index shows prices in Los Angeles, San Diego, and San Francisco appreciated 170% from 1987 (the start of available data) to 2012 while the 2% cap only allowed a 67% increase in taxes on homes that were not sold during this 26-year period.
[1][2]. On average, heirs to $1m+ homes in those markets will be hit with roughly a 103% increase in one year (170%-67%). So, Prop 19 hits a narrow group of people with a 100%+ tax increase when Prop 13 was supposed to limit increases to 2%. A compromise rule could have been to spread out the increase over the course of a few years, but that wouldn't induce more sales like the brokers' lobbying group wanted.
God, grant me the serenity to accept the things I cannot change the courage to change the things I can and the wisdom to know the difference.
Living one day at a time, enjoying one moment at a time.
Accepting hardships as the pathway to peace.
Taking, as he did, the sinful world as it is, not as I would have it.
Trusting that he will make all things right if I surrender to His will; that I may be reasonably happy in this life, and supremely happy with Him forever.
—Reinhold Niebuhr, 1892-1971