It does have a good WTF! ending. The bad subtitles don't help much to clear things up. I guess you have to some up your own opinion.......
In my opinion, things will always be screwed up to a certain point since Mimsy is pregnant. That baby and its offspring do not belong in either world their ancestors are from. Orguss 2 does not really solve the problem either. Same problem that can't be fixed. Then again, Orguss 2 does not exist to some.....
Here is somebody elses opinion on the end and and on the rest of the episodes.
http://anduin.eldar.org/~brad/anime/orguss...sode_index.html
Maybe Keith will post his opinion on what happened. He has a very different opinion then mine.