Rarely use the compressor (or indeed any compressor!)
Haven't fiddled with any CTRL machines - do it all with Remote Zero
Have not used song mode yet (have on my Mono though) but I will do so extensively once I get my studio sorted and start writing proper tracks again.
I use the GND machines and AM ALOT!
Have not really experimented as much with the P-I machines as I should have
I don't make as extensive use of p-locks as I do on my Mono, I like my drums to be pretty solid and stable, I do use them to add expression and dynamics but generally not for wibwobbling allover the place LOL
Bit one thing is for sure, the MD is a very well conceived product, to some its a kickass IDM tweakbox, to others its an all out glitch box, to others its a rhythmic core of their studio, to others its a vintage drum machine emulator, , and for others its all of the above and more etc.
But it is cool to sometimes step out of your comfort zone, and pick up some tips from fellow users and possibly go off in a new dawn - er I mean direction