Here is the map with modifications made by me. This is currently a rough prototype based on the talks and flock-drawings (program where multiple people draw doodles at once) we had.

KEY:
#1 = Orion Arm (or Orion Spur)
#2 = Sagittarius Arm
#3: Scutum-Crux Arm
#4: Norma Arm
#5: Perseus Arm
#6: Outer Arm
Sol: The location (off only a little bit) of Sol in real life, located on the Orion Spur/Arm 

Light Orange = Terran Imperium Remnant (Monkeypants)
Whitish Grey = Dominion of Man (Monkeypants)
Maroon = Second Terrran Imperium (Serpentine88)
Tannish Brown = Barbarian Horde (Serpentine88)
Green = Musashi Empire (Darkspleen)
Light Blue = Sovereign Star Confederation (Isotope)

[img]http://i.imgur.com/1QZ8zMO.png[/img]