It's going to be a nightmare indeed.
Even though I'm kind of a limited collector, only worrying about what I want for my live cardex and FA section, I still need all 12 Pokemon FA, 7 of the regular Pokemon EX (don't need Kyogre EX, Groudon EX, and Wailord EX. I also am not worried about Camerupt EX and Sharpedo EX until they get their megas which I half expect in Double Crisis though I could be wrong) and at least thirteen other cards that I can think of right off hand.
But those first 12 Pokemon EX FA will be a nightmare all on their own. And of course on top of it I still wouldn't balk at getting the trainer FA's or the secrets, it's just not at the top of my list.
Let's not forget we don't know all of the promos and assorted stuff for this set. We still have one more three blister promo and one more checklane blister promo to be revealed. And the Kyogre/Groudon tins. And who know what else. That's additional things for collectors to worry about. And since I also have a promo binder...