Apokolips vs. Green Lantern Corps
The GL Corps gather to attack Apokolips and once and for all wipe out Darkseid.
GLC Roster:
Guardians of the Galaxy
7200 Green Lantern (that should be all to my knowledge, including the top Lanterns)
Ion (Sodan Yat)
The Alpha Lanterns
Scenario 1: The attack Apokolips by suprise.
Scenario 2: Darkseid & Apokolips got 48 hours prep.
If you think the GLC can't take this, add the Blue Lantern Corps too.