Never sure if I will make 1K or not each year, but Platinum still has the higher bag allowance and the ability to bring more into E+. Since I rarely change award travel, or even cancel award bookings, I still see the value.
If anything, I wish they would apply the same fees to paid travel. Maybe reward the higher ups with a lower change/cancellation fee. Now one could argue that more 1K's, PP's etc make changes. But I pay less for United Club membership as a 1K, even though I likely consume way more food, drinks, and newspapers than a gold or silver?