Not to break up the interesting discussion, but, uh, the first post here (which I made) has 13 thumbs (at time of writing). I mean, 13 thumbs, for basically standing up in a group of people and shouting 'first!'. I'm not complaining that much, since I like the sudden jump in respect, but... it's basically reverse shooting the messenger, you know.
And now back on topic with discussion: Willvon's numbers make a lot of sense, but those estimates are pretty precise, and not really very certain. If there's a supply pile for Shelters, then there could be only 13 or so unique-gain cards, or perhaps there's a lot fewer Ruins/Shelters and there could be many more. But either way I think his estimate is pretty good.
And I loved the flavour text, as always. It does seem to suggest things are going to become much 'harder', as in perhaps more attacks, slower strategies and the like... perhaps, more cheap cards to compensate?