Okay, my first response is a completely smart* one - you can choose what points to get. Fight mobs in the correct regions with the right status. There. Been said, let's move on to actual thought.

I guess I could see an argument for a status-type thing, where we accrued points that corresponded for our nation allegiance (which means enabling Aht Urghan and the past nations to be our primary allegiances), having that define the points for Signet/Sanction/Sigil. But being able to choose and switch on the fly seems...I dunno. There's so little, relatively, to do with CP/IS/AN, that it seems overkill.

(wait, you would like to gain CN, IS, and AN inside Abyssea instead of cruor? That's just...why!? Also, ftr, 1k cruor isn't really massive.)