A box of 45s in reproductions of original picture sleeves would indeed be fantastic.
To keep cost down for those who don't want every single one, they should probably split it up into three volumes, roughly following the Anthology timelines, so 62-64, 65-67, 68-70 singles boxes.
A reissue of the Our First Four box set with the Hey Jude, Sour Milk Sea, Those Were The Days and Thingymebob singles and the cards/insert/letter from Derek Taylor would be really cool too. Honestly that should have come out in Fall of last year to celebrate the 50th Anniversary of Apple.
On the topic of singles, I'd like to see some a series called "singles that never were" or something like that. All issued on vinyl with an outtake/rarity on the b-side.
For instance:
No Reply is one of the great underrated songs and album openers for the band. Put it out now on 7":
A side: "No Reply"
B side: "Leave My Kitten Alone"
...
In My Life is one of the Beatles greatest ballads, and would have been a #1. Put it out now on 7":
A side: "In My Life"
B side: "Norwegian Wood" (heavy sitar version)
...
Got to Get You Into My Life was a hit in 1976 but never issued as a single in 1966. Put it out now on 7":
A side: "Got to Get You Into My Life"
B side: "Granny Smith (Love You To)"
...
A Day in the Life was banned by the BBC, so it wasn't a single. Put it out now on 7":
A side: "A Day in the Life"
B side: "Carnival of Light"
...
No singles were released off the YS soundtrack. Put it out now on 7":
A side: "Hey Bulldog"
B side: "It's All Too Much" (long version)
...
A sure fire hit from Abbey Road would have been Here Comes the Sun, and it's the bands most streamed song today. Put it out now on 7":
A side: "Here Comes the Sun"
B side: "Come and Get It"