So I'm not really sure if anyone else cares enough about this, but anyway, a while ago I made a forum post about the unproduced Simon Tse Productions Halloween.
Well I've found a minor update on this... Apparently there are 197 cases where a Horror Tv Show or Movie is mentioned in a fangoria article only to never be made... (And this is just from 78 to 09)
I Don't know for sure, but that might be helpful in someone else's search for something as well...
As for Simon Tse Productions... I still can't really find much about them, I was able to find their website on Wayback machine quite easily, but I can't really find anything out about what happened to the company or the show itself...
(I'm also not sure if this would count as LM or not, but I guess I just find it fascinating that there's an entire book about Unproduced Halloween Sequels and it doesn't even mention the Anime )
Sorry... I didn't really know what i'm doing, If you look in the thread for the post I made on the Lost Media section of the Forum, you can find that link and many more...