There's been a decreasing amount of this in anime production as of late.
It seems like a lot of anime released the past few years have been manga adaptions, eroge/VN adaptions, sequels to other popular anime.
Personally, I've enjoyed a lot of the adaptions. Some of my favourite anime are visual novel or manga adaptions. Examples like Clannad, Minami-ke and Higurashi no Naku Koro ni come to mind.
My question is, have people been enjoying the adaptions? Or perhaps the consensus is that we need more original, straight to anime material?