Only time will tell whether people double down and go 4 N to increase the chance they have one available in the late game or start moving away from the card towards other shuffle supports like Hala/Wicke.
Wicke isn't close to Hala or N.
You shouldn't be putting unplayable cards in your deck. You should be able to use up most of the cards in your hand most of the time. Yes, there will be situations where your hand is just stuck full of cards that can't be used due to luck, but those occurrences are rare.
The only situation where wicke even comes close to the other two is if you for some reason have a hand full of bad cards. Why run Wicke, who is only useful when you have an entirely dead hand, when you could run Hala or N, who are both useful in those rare situations where you have a full hand of bad cards, but are also useful in the much more common occurrence of just not having too many cards left in your hand.
On average, Wicke doesn't improve the quality of your hand, and reduces your hand size by 1. She can take really bad hands and bring them up to average, but N/Hala can do the same thing while also extending good hands.
I mean, I'm gonna run 4 FA Wicke in every deck I ever make, but card's awful.