Marathon does not have enough maps to have 2 of them be worthless for loot.
Pinwheel is basically Dire Marsh Lockdown or Perimeter Signal Intercept but it has a 100% spawn chance and rewards 10X the amount of loot. It's just a map event that's always there.
Outside of early season farming tier 0/1 mats that only spawn on dire or Perimeter there is 0 reason to ever play these maps. There isn't even that high of a chance the events spawn and when they do they reward the equivalent of one box from one wing of Pinwheel.
Season 2 needs to continue to make Perimeter and Dire into actual maps people run by choice. This means:
- More events with more rewards.
- More threatening enemies (hinted at possibly being a thing on Night Dire)
- More loot at the POI's.
Beyond week 1 and 2 running exclusively Outpost on weekdays and then Cryo on weekends is pretty grim in terms of variety.
Maybe Bungie is making a "high stakes" queue which will be the night versions of each map, which would be sick, but the game needs this now not 3 seasons from now.