If you play 1 or 2 copies of interns or archived memories, so you can make sure you get all 3 jackson activations, I don’t think mill is a serious concern. I’ve definitely had games as glacier end with 0-10 cards left but I would rather rely on tight play (this includes knowing not to draw too much early game!) than metagame against noise with 54.
That said… in ETF and RP glacier, there are enough good cards that you can definitely add 5 more, and only hurt the deck by introducing higher draw variance, rather than by adding bad cards. HB can play an extra project V or ABT, and jinteki can play an extra Fetal or the 3rd NAPD (my preferred build is 3 TFP, 3 nisei, 2 NAPD, 1 gila). Then 2 more ice, 1 restructure or PAD, and an interns or archived mem.
I definitely think archived mem is underplayed right now. I always find room for 1 in my HB decks.