Good animation quality, nice story, very detailed script. I liked the technology a lot, since it is different from what we have now only by its scope, power and simplicity of use. Also, the typical feudal future as seen in a lot of SF writings, seems logical to me, since democracy is only the child of overpopulation.
But it does have its weak points. The Japanese/English soundtrack that makes no sense no matter how you translate it, the silly girlish clothes and behaviours applied to seemingly very old and powerful creatures, the heroic theme (the main characters escape from ridiculously dangerous situations by frowning a little, while "normal" ships and people are destroyed instantly).
All in all, though, it was a nice series, it made me watch it from start to end. It does borrow from a lot of successful animes, but it does it in an almost original way. Also, if they would have made it more serious, people would have accused the makers of copying Ghost in the Shell. Man, I miss that series.