The more I think about this card, the more excited I get.
One of the key struggles in building a deck has always been with unique cards. Named characters and places (Kati Jones, John Masanori, Mr. Li, Aesop's Pawnshop) are always unique, as are all consoles, all of the new Genetics cards in this data pack, and a few other significant cards like Hivemind or Autoscripter. There are also pseudo-uniques, by which I mean cards that are not technically unique but provide no additional benefit after the first. You are allowed to play a second Professional Contacts or e3 Feedback Implants or Yog.0, but there is no point in doing so.
Unique cards typically provide a better return on their install cost than non-unique cards, because they have an extra invisible cost to balance it. This cost is dead draws.
If you are running more than one copy of a unique or psuedo-unique card in your deck, then sooner or later you will draw another copy. If you installed the first one, then the card may as well be blank. Your click is all but wasted--the only values of having a duplicate is to soak up damage and/or replace the first if it gets trashed.
This cost creates a tension in building your deck. The more copies you put in, the earlier you see it, but the greater the risk of dead draws.
Paige eliminates that. Put 3x Paige in a deck, and she'll remove the extra copies of herself. Add in 3x Kati and as soon as you find her, the rest get filtered out. Hell, just put in 3 copies of everything, and start churning through your deck like there's no tomorrow. Paige makes sure that every draw pays out. (This is especially useful in Valencia Estevez to work around that pesky 50-card limit.)
There is some risk, of course. If you lose your initial copy of an essential rig component, then you have to find your recursion or you're in trouble. A thin deck is also weaker protection against damage: if you use Paige to remove 10 cards from your deck, that's ten fewer cards to throw away on a Snare! or Fetal AI. But what's Anarch without a little risk?
You can also use Paige to locate cards you do want multiples of (Datasucker, for example) and then use recursion (like Déjà Vu) to bring them back, but if that's your plan then you should probably be playing MaxX instead. By the way, don't play Paige with MaxX: MaxX is already throwing two-thirds of your cards in the garbage, she doesn't need any help from Paige.
I think this card will really change the way players think about building decks, and that makes me very excited.