I give thread my stamp of approval! Lots of good info!
A couple things
When two things+ hit at the same time (two toms, snare and kick, snare and toms, etc.), flam them a little. Just turn grid off and place the notes with your mouse as accurate as you can, it usually sounds good. I think usually the right hand might hit a little before the left, but it doesn't really matter.
While the velocity information is great, and will work for most things, sometimes it helps to play around with it. Sometimes a simple 4hit fill can be a short crescendo. Listen to the fill at :08 in Paramore's "That's What You Get", the first two hits are softer than the second two. Sometimes this kind of velocity will work much better.