It sounds like most posters here should or will join the DART program!
I had complained about the PMUs for years but I did nothing about it for 2 reasons:

1. My int'l flying to Asia in J and F gave me enough miles on *A to do my trips to Europe with awards in first, so I could do away with the PMUs
2. As has been mentioned, AA's program, though fantastic for EXPs is not as good for Golds and Platinums, so switching was a bit of a painful process.

However this year, thanks to the double EQM AA is having, I easily switched to AA and I am very happy about it. If I were to consider reaching elite status on another US based program, it sure would not be DL. I am done with them. Even if they changed the PMU rules, I have no trust left in them. Jeff has nicely screwed that up in my eyes! I would be convinced that two years later, he'd go back to the crazy M/B/Y rule! The Delta SkyMiles program manager cannot be trusted and I will never trust Delta again!