Let's see...now that more time has passed:
Mirai Nikki is getting a TV series in ?October 2011. That MIGHT be interesting.
Hana to Akuma --- I still wish there was an anime of it.
Considering that Im Dal-Young stories haven't been translated to anime to my satisfaction, I'll pass on those.
A "Hoshi no Samidare" anime would be cool, but that would be more of a Gainax semi-weird kind of story. The manga wasn't popular either so an anime would never fly.
Teiden Shoujo to Hanemushi no Orchestra --- this would be very cool to see if there were more chapters of it available.
Tasogare Otome x Amnesia --- I wouldn't mind seeing Yuuko in anime form.
Blood Alone --- would be all right, but that story is frequently too subtle and slow for most people.
Onikiri-sama wa Hakoiri Musume --- would be fun, but the manga took awhile to get interesting.
Yougen no Chi --- would be neat, but it's too grisly. The manga has been on hold for years too so the story is almost officially dead now.
Hyakunen Renbo --- would be cute.
Iris Zero --- I get a strong feeling that this will become an anime somewhere down the line.