Yeah, 7th Expansion always produces... unique art that made me think twice to play it. Almost all of their works has been animated by DEEN except Higanbana no Saku Yoru ni. So, except DEEN adaptation is overwhelmingly worse than original source, I think I'd better satisfy myself with DEEN adaptation. I know I haven't played any of their works to make a comparison, but the adaptation of Higurashi and Umineko was pretty good for me, maybe not great, but good nonetheless.
Btw, you gave a score of 7 for G-Senjou no Maou. May I ask why? I thought the story is, in a sense, the most compelling among other VNs, especially Haru Route.
In a case you're interested, here's my VNDB profile:
http://vndb.org/u26074