Re: Iconic Characters: the Justice Squadron
Introducing mega-powered NPC heroes into a standard power-level game just seems to have dubious merit and some potential risk to the campaign.
1 Opens up the game-balance "Pandora's Box" and encourages rampant power-escalation with the PCs which can be hard to curtail without being heavy-handed ("The GM Says No"), which, I suppose, is only an issue if your campaign has any kind(s) of power-restrictions.
2 Makes the PCs irrelevent, especially if they saw their characters as fulfilling the JLA-role.