Morima,
Morgoth, according to Tolkien's latter letters, did not twist or torture elves to make orcs. Tolkien here describes orcs as completely different from elves, a completely different creation. They were simply extensions of Morgoth's evil and hatred. Orcs are talking animals, in capable of moral choice. See HoME chapter X.
Though, it is certain that Tolkien at the time he wrote the LotR was leaning toward the notion that orcs were twisted elves, he never comes out and says it in the books except through a quote from Treebeard, which Tolkien clearly states was not the correct theory. Which ever way you go, I still think that orcs being twisted elves is a credible thought for discussion, even though Tolkien latter changed his mind on the subject.
Only the Valar, then could create new life forms, though Morgoth’s creation is well below the creations of the other Valar (orcs lack free will). However, it is apparent that the uruk-hai and the olog-hai were variations on a theme, and this was well within the power of the Maia. Through breeding (perhaps), and maybe mixed with some sorcery, orcs (and trolls) could be “improved.” How or by what means goes beyond the scope of this thread, and has been discussed many times already. Here is
the best, some other
orcs, and
uruks, and
orcs, and
more orcs.
As far as Saruman’s jealousy is concerned, my opinion is based on the chapter The Istari from UT. However, its simply an opinion, and the subject is open to interpretation. [img]smilies/smile.gif[/img]