As for FIFA deciding who plays who in the WC playoff that's true I think, but didn't it get changed from AFC v OFC and CONCACAF v CONMEBOL after lobbying from CONCACAF? So lobbying in the other direction could help.
I thought this was done via the drawing of lots of some sort. Could be wrong though.
Oh, and anyone wanting to sing derisory chants about Liverpool at any ground & in any competition in the world, is a friend of mine.