3D Printing

Would be very easy to add this. Because, for example, auto-home is:
MENU_ITEM(gcode, MSG_AUTO_HOME, PSTR("G28"));
So, adding:
MENU_ITEM(gcode, "Home X/Y", PSTR("G28 X0 Y0"));
Would add the command you want :-)

I still need to fix the "multiple GCode commands" option, as the cooldown option:
MENU_ITEM(gcode, MSG_COOLDOWN, PSTR("M104 S0\nM140 S0"));
Only cools down the hotend, and not the heated bed. So the M140 S0 doesn't get executed.