Wave to midi question

Haven't tried this yet but I would imagine a better way to do it is to use Audio Transients to extract a Midi pattern from "real recorded drums" and use drum replacement via Addictive drums that way (I have done this many times and it works)

Too bad. This works ok-ish in Ableton. Time for Melodyne to update the "percussive" algorithm? :)
 
EDIT Actually in Ableton it's even better as it actually autoloads a drumkit and starts playing your groove.

Well actually if you have real recorded drums it's a lot easier since you'll have separate kick and snare mics and the like. Check out the Melodyne site for some videos here;
http://www.celemony.com/cms/index.php?id=feature_drums#top
 
Of course, Audio Transients are very similar in this case.

For percussive stuff, if it is layered, you will generally need a multi track recording of the drums since even if you have Melodyne editor, the DNA pitch analysis will likely not pick up the other drums well independently, unlike pitched instruments. But you can definitely use Melodyne to do stuff like hit replacement and it is a workflow they support.