I'd like to aim a quick discussion at useful macros for cleaning up hotbars and using a lot less hotkeys to make Machinist more manageable.

The first macro is stacking Head Graze and Suppressive Fire onto the same hotkey. As far as I'm aware, at close range, Stun will always trump Silence. Please let me know if you can think of a situation when this is false. So I use
/macroicon "Head Graze"
/ac "Suppressive Fire"
/ac "Head Graze"

Needless to say, you could also stack all 3 Raging Strikes, Hawk's eye and Blood for blood onto a macro to either mash them all out at once or spread them out.

Similar to the Stun or Silence macro above, you could do a Gauss Round or Ricochet stacking macro as well. I can see this one having slight issues due to Ricochet hitting nearby mobs as well, which can affect mobs that are under CC.

What are some other macros that are useful as well? Should I bind Heartbreak to Split, Slug and Clean shot as well?