There is no Jerusalem... Heres hoping for Israel.
I'm not sure Israel really qualifies as a civ major enough to include. They never really had a large empire, never had a large population and spent most of history getting conquered by other civilizations. Ie: Babylon, Persia, Rome, the Byzantines, the Arabs, the Crusaders/French, the Arabs again, the Ottomans, the British, the French (Napoleon), the British again ... before finally becoming their own state again. They never participated in any major wars. Their only notable contribution is culturally as Judaism is the oldest of the Abrahamic religions and all three religions hold Jerusalem to be a sacred city.
They'd probably be better served by having Jerusalem be a special city state which gives your civ +2 happiness and +2 culture/turn if you're friends, +5 happiness and +5 culture/turn if you're allies, and +8 happiness and +10 culture/turn if you own the city. Or make it a city state but with capital status so that it has to be conquered for a domination victory.
They're also not in a culture group with a limited amount of civs - ie an area where there is room for more civs where they otherwise wouldn't be important enough to be included, such as the Americas (only Aztec, Inca and Iroquois so far) and Africa (only Egypt and Songhai so far).
My top civs I'd like to see in a DLC (or preferrably expansion) are:
Maya (need more American civs)
UA: Some kind of science bonus, to reflect their understanding of the calendar?
UB: Ballcourt, which gives a large culture bonus as well as happiness (like in civ4).
UU: Holkan like in civ4
Zulu (need more African civs)
UA: Something to do with a unit positioning bonus, like +25% strength when adjacent to a friendly unit to reflect Shaka's innovative tactics and excellent generalship.
UU: Impi
UI: Kraal (these were very important to Zulu society, kind of like a better pasture. Also unique improvements rock and so far we only have two)
Majapahit/Indonesia (they have never been in civ before, had a large empire / influence across the archipelago and are an interesting cross between Siam and Polynesia)
UA: Something to do with population (Indonesia has 250 million people), or culture (it's very multi cultural), or an embarked unit bonus (but we already have a lot of those).
UU: Either a naval UU (they beat a fleet sent by Kublai Khan) or the Keris Warrior who carries a wavy sword.
UB/UI: No idea. Terrace farms are used all over indonesia to grow rice (because the islands are mostly very hilly) but the Inca already have it.
Korea (More east asian civs wouldn't hurt, and they are one of the major countries you think of when you hear "East Asia")
UA: Something to do with culture or science
UU: Turtle ship (replaces caravel, less movement and sight but much tougher and better ranged attack). We need more naval UU's in the game.
UU: H'Wacha (a cannon that fires arrows / spears) - replaces Cannon, much much better vs units, a bit worse vs cities.
Portugal (we don't really need more European civs but these guys owned a huge colonial empire before any other European civ).
UA: Naval units get +2 sight range, embarked units get +1 sight range? Any other ideas?
UU: Carrack, same speed as a Caravel but less sight range and tougher? (we need more naval UUs in the game)
UU/UI/UB: ???
Carthage
Another north African civ which would fill a space on the world map where no one currently is (Morrocco).
Ethiopian Kingdom, to add more sub-saharan African civs and a limit to Egypts southern expansion on Earth maps
Netherlands (less priority for these as we don't really need more European civs - Netherlands would have a gold bonus)
Poland-Lithuania
Austria-Hungary
Holy Roman Empire (less priority for these historical civs that are overlapped heavily by current civs)
Byzantines
Mali
Hittites
Phoenecia - imo the near east is already too crowded for these guys, but they could be interesting
More far-fetched civs:
Kongo
Australian Aborigines
Brazil / Tipi people
New City States:
Zanzibar (Why is this not already in the game? It's a famous City-State on an island off Tanzania - everyone has heard of Zanzibar)
Kinshasa - third largest city in Africa, c'mon guys
Jerusalem (maybe)
Kabul (Afghanistan capital - twice as large as Almaty)
Tashkent (this and the next two provide some cities to stick in central Asia apart from just Almaty all of them are bigger than Almaty as well)
Baku
Yerevan