Play the Oceania Map if you have the DLC, its amazing for pirate warfare. I might run one up tonight
I love this map type, currently my 1st game on a standard size, and the fact it has no ice caps/polar regions compared to some other island scripts is nice, it's also different from the Large islands script as it seems to have a more general climate (in my case desert/dry, with a few scattered rivers/lakes, and forests only seem to appear at the equator.
Spread of city states is not as predictable as large islands, although, they seem to favor the top/bottom edge of the map so sometimes they have only "half" their normal land area.
As far as the Dutch go, I will try them at some point again, seeing I am Dutch myself, maybe on a sandstorm map for floodplains.
I think the fact people saying they spawn in jungles, is due to marshes are on grassland and jungles are generally on the equator/grassland zone (even though there's plains underneath jungle, the civilopedia entry is wrong due to an XML typo (which also prevents putting jungle on plains in worldbuilder, however i fixed that with changing 1 word: http://forums.civfanatics.com/showthread.php?t=481941