Random though about this. Currently you can make a trigger fire another trigger.
<option name="activateTrigger" value="triggerAttachmentRussians5_FarEastReserves:1:false:false:false:false"/>
How doable would the following be?
<option name="activateRandomTrigger" value="triggerAttachment1:triggerAttachment2:triggerAttachment3" count="2"/>
The above would fire exactly 2 of those 3 triggers at random. IDK how important the additional options are for activateTrigger (I don't understand what the test things do, and if I wanted to fire the trigger more than once I would just put more lines)
Also I investigated and I do not have the global conquest map on this computer. Sorry