So I'm more okay with Omen looking at a few things:
Scales are transferrable between jobs. So don't need to kill a boss on a certain job.
Omens are 99.9% what gives you cards. So clearing trash is what farms you cards. So basically you want to enter it with one of two goals on hand: Either go to clear the bosses for drops/scales, or clear all the mobs for cards. If I find the right group I might aim to do a full clear of trash and see how many cards I can get up to.
The lockout still sucks ass though. Let me purchase a new KI for gil or something. Get the economy going.