There are still a lot of bugs in D's bugzilla related to GDC:

http://d.puremagic.com/issues/buglist.cgi?query_format=specific&order=relevance+desc&bug_status=__open__&product=DGCC+aka+GDC&content=

If there are any that are still broken in GDC, and you would like to see fixed, just mention it here, and I'll do my best.
Please make sure that they are still relevant though, as I'm sure some may no longer be relevant.

-Michael P.