I have noticed the same thing (RE: Gold problem) with various civs, but mostly persia and israel. Kinda weird.
I would say corruption reduction is rather silly for Israel, since they are not exactly positioned for massive imperial expansion. How about make it extremely powerful culturally (for an improvement, not a wonder!) which DOES make tons of sense, to me at least ;p
Epic of Gilgamesh for the pagan wonder, if that is the right area of the world.
Northern European... some kind of sacred grove? Remember the druids! ;p
For the Hindu wonder, something that recognizes the importance of the Ganges would be nice.
For the Jews... I cannot think of anything besides synagogue that has already been mentioned, mostly because, since they lacked a state for such a large part of history, they never really built the amazing structures that longer lived nations, and cultures who were not being constantly uprooted, did.
Perhaps you could give them a small wonder in the Modern Ages that does the same thing as the 2x growth wonder, and call it the Return or some such (I am not 100% sure this morning as to whether Diaspora means Return or Dispersal, so I will leave that up to you guys ;p).
I have not tested recently, been too busy getting my college apps together, but if things go as planned I will have the rest of the year open, and most of next year too!