Which of the 52 Earths should get their own series?

Of the various Earths enumerated in the Multiversity Guidebook, which would you like to see featured in their own series (whether ongoing, limited, or digital first)?

I would gladly give DC my money for series featuring Earth-4 (Charlton characters), Earth-7 or 8 (Marvel homages), Earth-10 (Nazi world), Earth-18 (cowboy world), Earth-39 (W.O.N.D.E.R.), Earth-42 (chibi world), Earth-47 (hippie world), or my number one choice by far, Earth-51 (home of Kamandi, the last boy).

Addendum: of the seven worlds not yet revealed, which worlds would you want to be incorporated as part of the DC Multiverse? I for one would love to see Batman '66 (the television series and the digital comic) as one.

Some seems to be very gimmicky but a good writer could make a good series around one of the other DC Universes.

The one where batman is a green Lantern /thread

How about a universe where everyone is batman?

Earth 7 would be nice. I would love classic Captain Marvel.

Kamandi's would be nice and if the DCAU is its own Earth then having a book centered around the entire DCAU would be awesome. Freedom Fighters would be interesting.

The Just.