Honestly, I don't understand why most PuGs prefer Pantheon over Skirmish.
Pantheon:
- is down for 2-3 days sometimes
- you can join as premade team
- the light/dark demigod seperation leads to really boring/annoying match-ups sometimes
Skirmish:
- always available
- much harder to play as premade, better chance for PuGs
- more variety because light/dark side demigods can be on the same team
- you can play all 8 demigods in each game, no restrictions
- chance of people droping because they weren't matched up with their premade friend is basically nil