I decided to have a good listen to Death Magnetic and Beyond Magnetic because of the Lars hate about his drumming.
I honestly couldn't hear in any of the songs where he could do anything more to improve them, he does what is right.
What do you expect him to do, put 200bpm double bass drums in on every song and a million rolls per second drum fills?
His drumming is perfect for what they are doing so don't blame him but the songs they are doing.
It would be nice to see what he could do with a band like Slayer.
It's mainly when they play their old stuff, he simply misses notes out. I've seen live stuff of theirs when they play Creeping Death for example, and he simply misses half of the bass pedal notes out - or on fills, he just does it all on the snare drum. Its boring to me, and its almost lazy in a way.