Do you know this guy?
http://www.youtube.com/user/DrMaS2010
He develops some DK remake in Delphi. But it seems as it is closed source and only uses the original DK graphics.
On his Youtube page is also a download link to his game.
Maybe you should try to contact him and make him aware of OD. Maybe he can share some knowledge, content and/or ideas.
If you already know of this, then ignore this post.
Edit: and another one:
http://www.youtube.com/user/Saiyayenkee
edit2: yet anotehr one (look in the middle of his uploads)
http://www.youtube.com/user/XMan7733
edit3: And WFTO seems to get a lot of prgress, too, they seem to have a new engine and it looks good:
http://www.youtube.com/user/WarForTheOverworld