I like that you mentioned Anna K., I loved, loved, loved that deck, but there were some cards that would throw me out of a reading so badly, I couldn't see keeping it when I had to scale down. Def. one I miss, though.
Mary-El: Mind blowing, would even have gone for the more Marseille inspired system of the deck if it hadn't been for the Archangels on every 6 card. One, I could have dealt with, not every one. Still, for the right person, a beautiful and inspired deck.
Journey Into Egypt: GORGEOUS! A deck I mourn a little just because it's so lovely and the artwork so fantastic, But...a deck that's gonna take some commitment to understand.
Gorgon: Gotta write it like that, cause it seems so simple on the surface. If you can handle it (literally, 'cause it's huge) go for it.
Those are my recs I've had to part with due to space issues.
Ones I couldn't part with:
Tarot Nova: compact, cute, and deceptively compact and cute. The look of it is great and it's almost Tarot at it's most ESSENTIAL. If you every have to travel with a deck, this is the one I'd recommend. If you're a RW aficionado, but willing to branch out, you'll love it for the new perspective.
Sun and Moon: I can't stop loving for it's minimalism. End.
Morgan Greer: Took me forever to decide on it, but, as it turns out, a beautiful deck, and very straight forward. Has a place in my heart because it's the first deck that was really easy for me, but also simpatico with the RW.
Gaian: Love it or hate it. For me - so authentic I can't even go on about it enough. Blew my mind just because it is what it is, but also because it was so FUNDAMENTAL for me. Very human deck. Surprise for me was the Pacific NW vibe that's all over it and I still love it. I'm from the deep south and love things that recognize southern culture, I'd never have thought that would be such an influential deck for me.
Also, I think the PCS, RW, or Universal Waite and the Thoth - in whatever versions - should get a mention here. They're decks that will change the game, no matter what you've seen before.