I'd choose field of bone for the sole fact that is has sunshine and open environment. :D

Swamp is too dreery.

Swamp is beautiful! And Field doesn't have tasty frogs.

All pathing in Outside Kunark zones in p1999 is fubard. It is a difficult fix so understandable that is has not been worked out. IT is hard to provide proof as not many folks posted about the pathing of mobs in many of these zones. Kunark zones had specific limitation on where certain mobs could roam depending on how the zone was set up.

example:

Frontier Mountains: was roughly divide in quarters for mob pathing in those quarters. There is supposed be one area they would not enter unless you trained them /pulled them into it. This area was roughly center of zone past giant fort and was shaped like a rough oval. mobs would path upto it stop and turn away.

Swamp of NO hope: no mobs except newby ones( lvl 4) i believe could spawn or wander within the newby yard on live, unless trained or pulled. The broken/sunken path leading south to fiona vie was a line that higher level mobs in this zone would not go near. The small islands that had this paths had mobs on/in them, but they would scale in level to about level 14 if i rem correctly, as you went further south.

Burning woods: Played extensively in this zone. Generally speaking mobs wandered all over freely EXCEPT in a large roughly square area near the giant fort and the south east undead ruins (ones near the tip of the crater) On live this was a favorite area of necromancer and druids and bard to kite in because of the safety from wandering mobs. There was some area where you would find concentration of mobs like crater and hills west and north having wasps , and area near sarnak fort having only sarnak s in it.

all that could remember of me top of me head at this time.