what i'd really like to see is a conversion kit for the MEK!

Nick Batt gives a good overview in this 12 minute video. He Demonstrates what can be done with Flex editing, and primarily focuses in on this new feature. I would say it is good review. He doesn't really touch on the other enhancements in Logic's update. The pedalboard is a huge addition to Logic along with all the effect plugins and virtual amps that are included in it. If it had been me giving the review, I would make a quick point that Logic 9 just runs better and smoother. Overall though, Nick did a good job. Thats my 2 ¢'s