How about some tutorials about how the deeper technical aspects work. I know a lot of you guys are programming wizards, but for a guy like me who has used mostly DAWs, some of this stuff is like reading Chinese (I don’t read Chinese). 
Overviews what some of these things can be used for would be interesting:
- Sysex section in the manual
- MIDI cc messages with other gear (sure you can probably figure it out on your own, but a ‘how to’ video is always nice)
- effective and more interesting ways of using User Waves (in the MnM specifically)
- “Easter Egg” reveal video showing some of the undocumented features.
- Cool and interesting ways to use Trigless trigs (MnM) and other esoteric ways to control the sounds.
It would just be cool to see how more advanced users get the most out of some of the deeper aspects of these machines. Sometimes I feel like I’m missing out on something really amazing! Also, there is a shortage of tutorial videos for the MnM and MD, and another poster stated.