This produced a very neat world. (Warning, seed included, strip out if desired)
[WORLD_GEN]
[TITLE:WET]
[SEED:850285732]
[HISTORY_SEED:3592828844]
[NAME_SEED:108309160]
[DIM:257:257]
[END_YEAR:1050]
[BEAST_END_YEAR:300:80]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:1]
[ELEVATION:1:400:800:800]
[RAINFALL:10:100:1:1600]
[TEMPERATURE:25:75:400:400]
[DRAINAGE:33:100:1600:1]
[VOLCANISM:0:100:400:400]
[SAVAGERY:0:100:400:400]
[ELEVATION_FREQUENCY:2:3:1:1:1:3]
[RAIN_FREQUENCY:6:0:2:2:2:3]
[DRAINAGE_FREQUENCY:6:0:1:2:2:2]
[TEMPERATURE_FREQUENCY:1:1:1:1:1:1]
[SAVAGERY_FREQUENCY:1:1:1:1:1:1]
[VOLCANISM_FREQUENCY:6:1:1:1:2:3]
[GOOD_SQ_COUNTS:200:2000:4000]
[EVIL_SQ_COUNTS:100:1000:2000]
[PEAK_NUMBER_MIN:50]
[OCEAN_EDGE_MIN:2]
[VOLCANO_MIN:200]
[REGION_COUNTS:SWAMP:0:0:0]
[REGION_COUNTS:DESERT:0:0:0]
[REGION_COUNTS:FOREST:4128:13:12]
[REGION_COUNTS:MOUNTAINS:8256:9:9]
[REGION_COUNTS:OCEAN:8256:7:6]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:0:0:0]
[REGION_COUNTS:HILLS:8256:13:12]
[EROSION_CYCLE_COUNT:250]
[RIVER_MINS:800:800]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:25]
[MOUNTAIN_CAVE_MIN:100]
[NON_MOUNTAIN_CAVE_MIN:400]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_RIVER:2]
[SHOW_EMBARK_POOL:2]
[SHOW_EMBARK_M_POOL:2]
[SHOW_EMBARK_M_PIPE:2]
[SHOW_EMBARK_CHASM:2]
[SHOW_EMBARK_PIT:2]
[SHOW_EMBARK_OTHER:2]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:30]
[TOTAL_CIV_POPULATION:20000]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:8256:16512:8256]
[RAIN_RANGES:0:16512:8256]
[DRAINAGE_RANGES:0:16512:8256]
[SAVAGERY_RANGES:8256:16512:8256]
[VOLCANISM_RANGES:0:16512:8256]
Up in the north, there's a huge selection of glaciers, including a volcanic set with nearby dwarf civ, down to the south you've got at least three human civs who seem to have been bantering back and forth with the elves for a while (I actually pity the forest retreat that showed up right next to a human town).
I've found that upping the volcanism mesh size and weighting the top range high in addition to setting minimum volcanoes high really makes some nice effects. Clusters all over the place. Greatly increases the chance of finding a suitable site with magma in the area.
Huh. Oh, wow. I just found out that you can export resource distribution maps from Legends mode (
d) With enough patience, I could probably overlay them and work out what settings are getting me what features.
As long as I'm babbling, might as well say that I simply cannot use the paint mode. I have never been a fan of clicking blindly, and if I try it windowed or MOUSE:ON, it lags so badly I have no idea WHAT I'm drawing.