Bay 12 Games Forum

I've done this in the past, and it's certainly possible.  I found using dfHack liquids to be the fastest path forward in a very cold embark.  This let me build a large area of ice to mine, or several layers of ice above the surface to build within, pretty quickly.

In my experience, vertical cliff faces more than 4-Z levels are rare in 34.11, outside of the intersection of two rivers.  It is vastly easier to build your own, imho.

Dwarves can also survive in much colder environments than what the wiki might imply.  MUCH colder.  The colder, the better, when ice-casting.

what's the big deal with "ocean w/ no rainfall?"

Pumps or caverns for fresh water, and no trees, I presume?  It seems like a good way to drive the player towards the constant danger of the caverns.  Of course, with an aquifer, as long as it doesn't cover the whole embark, you have infinite fresh water completely without risk, so... /shrug

Necro towers can be exciting, to be sure, if they bring enough undead with them.

Generating lots of small islands or chains of them isn't too hard, but connecting them with bridges?  I'm not sure how that could be accomplished.

A few observations from my perspective.

Serrated disc are best at killing.  However, they also create enormous amounts of hauling jobs.  Wiping out an 80 goblin siege, plus mounts, and then cleaning up after them can be extremely time consuming.

Personally, I've found wooden spiked balls to be best at handling almost anything, given two facts: On most embarks, there is hundreds or thousands of trees, and second, the spiked balls don't create all those hauling jobs.

I've also found that trap hallways need pillars (walls) in the middle of them, and on the walls, to break line of sight and encourage goblins/invaders to path diagonally.  This, typically, ensures a much safer environment for the dwarves to retrieve body parts/goblinite.  Nothing worse than having 10 dwarven pincushions after an elite goblin bow squad leaves their mark.

On the subject of modding traps, I recently tried to create a dodge me trap as per the wiki (into lava) and found it to be near useless.  I changed the spiked ball trap (which can be done post-embark) to have 100 hits and found the results to be most satisfying. 

I then went on to modify a trap so that it threw the target a great distance, which was also rather entertaining.
YMMV of course, but that's how it worked for me.

This is a superior quality Leather Bin (kapok) <#1>.  It is decorated with exceptionally worked elephant bone.  This object menaces with spikes of exceptionally worked blue peafowl bone and exceptionally worked bushmaster bone. 
On the item is a masterfully designed  image of a gizzard stone in python bone by Zulban Legonathel. 

I like the lyrical quality of that last line " ... image of a gizzard stone in python bone ... "

Hey guys. Could you please suggest a world-gen with good ocean biome. Spent hours to find one on random gen and playing with edit brought no good.
Thanks in advance.

Apilem,
Do you mean something like... beachfront ocean with Good (as in feather trees/sun berry) biome adjacent in the same embark?  Any other preferences regarding savagery, embark size, elevation (flat, non-flat) temperature, etc?

...
- Pit exposed to the surface
...

I'm not sure what this means?  But that aside, this embark meets your criteria, as does this one.

Hmm... if you did new york/manhattan from 14th street on the south edge, 110th on the north, you could do it in one embark, I think.

Every 10th road as a visible street in the embark would only require 10 main streets, 12 main avenues

A 3x2 embark is 144 tiles horizontal and 96 vertical, so I guess each embark tile in the finder is 3x3 x 16 areas.
Leaving enough for the east & hudson rivers, and a minimum building size of 5x5, that means...

you'd need something like 80 tiles for e/w streets and roads and 96 tiles for n/w avenues and roads.

I think the whole thing could be reasonably well represented in a 4x4 embark.  a 3x3 might be possible, but there wouldn't be much room on the edges for water.

Or, to make it really easy, you could to this area...
or maybe half that?