Got another world gen recipe designed for Masterwork but this time it's a specific one with a seed so you can see what the embark is going to look like. It has a river and a flat volcano, the details, including screenshots are here:
http://www.bay12forums.com/smf/index.php?topic=101280.msg3391464#msg3391464It's balanced for 9 races, I go for Dwarf, Elf, Human, Automation, Deep Drow (evil ones), Goblins, Orcs, Kobolds and Ice Giants. Unfortunately the Automations didn't make it, all 4 civs failed, one hangs in there until 358 but the other 3 die around 80. Three of the four Ice Giants take a beating and exist only as remnants with a population of less then 100 but the 4th one is doing fine with over 10k in the year 360. The Orcs and Deep Drow are doing fine but the dominant race actually seems to be Dwarves. There are also over 300 Water Dragon megabeasts, some with a long history of kills so be careful!
That said, if you are going to miss the Automations you may want to randomise the historical seed as see if it turns out much different.
Didn't want to go on about the Masterwork mod too much in the world gen cookbook thread but there is quite a bit of compacted peat and wolfram in the upper layers. Despite the high megabeat levels in 3 years I've only had one Deep Drow werelizard, and a Griffon. Told all my dudes to get inside but one hunter decided to take a single parting shot at the Griffon:
Sandbox with less embark points and more ocean borders.
Sandbox? Like pocket sized? Maybe too many civs for the available space, it can't place them all. Post the details if you like in the cookbook and I'll give you some pointers.