I have looked up several guides and walkthroughs and I had not found any that mentions much about the SE wilderness...

What are we supposed to do there? Are there much items or gadgets there? Weapons?

And most importantly I walked up the mountain and found this group of lvl ~15 soceress etc. what do i get if/when I kill them.

I hope that after your questions, people can expect spoilers, but if not...
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After killing the lower sorcerers, the one higher one, and the 2 death knights, you will get the fang, boomerang shuriken, sorcerers heart, 2 giant swords (nice 2-handers, mook only), some gadgeteer items, and umm something else, don't remember what tho :D There's a couple of undead after the harder fight tho before you get your hands on the fang and the shuriken, and some of the other items.

You also get the lazurite stone, one of the most essential gadg ingredients.

Loved fang first couple of times, current party is using excal and light sword, so no real use for it... will sell well, though.

Oru

fang is single handed sword. perfect for your samurai . So I love it. excalibur is two handed. I hate two handed sword.

Boomerang shuriken is a cool throwing weapon that always comes back, so it's pretty cool. If I remember right, there's also a plate mail +3 and an ebony heume-both pretty good armor. There's also the metal belt to use for the superman gadget.

nope
the ebony heaume is in bayjin in one of the huts..But youll find the +3 armor,. thats right
you get a crusader helm Ac +8, very useless. Mummy dust for Antone is dropped by those undeads.

SE wilderness is also the gateway to the rapax away camp [img]smile.gif[/img]