Well, without being so overly critical, I also am particularly unhappy with the DOS2 editor - if only because it kept crashing, for me at least. Killed off any desire I had.
There seems to be a trade-off between usability and crashiness. Using both metrics it seems to be halfway between Oblivion's editor, which was quite easy to use but crashed constantly, and Dragon Age Oranges' editor which seemed to never crash but was impossible to use. Which is maybe why it never crashed...
