I'm looking forward to it. I too have wanted to revisit T1-4 and develop the environs with some original material. Every time I read T1 it makes me want to start a new campaign set in the Kron Hills region and develop some local monster lairs and other sites nearby to explore. I was thinking of putting Lolth back into the mix and linking it up with CHAGMAT.
6 more illustrations to go. This monster that I just drew is superdated but its cleaned up real nice. A real D&D nightmare-to-game from around 1981 when I was just getting into it all. This has a real 1981 vibe all over it.
I've only skimmed it so far, Gene, but I like what I've read and there a few things I will definitely make use of. You have been creative in coming up with low level threats and weirdness, like the friendly skeleton, floating head, and undead lancers on spectral mounts that cannot be turned or dismounted. D&D can always use more things like this, especially to present to veteran players to maintain freshness. And it is good to make things seem different than they are (either more dangerous or harmless) to throw the grognards off. I enjoyed the reference to 'romantic' death knights!
I also enjoyed the homage to the Caves of Chaos with the map at the end. Very nice! You manage to balance a sense of nostalgia with all new material, which is the ideal way to use nostalgia (i.e. show respect but not just copy/rehash).
I wanted a Fiend Folio tribute but not too much. In regards to the creatures, I didn't want specific GH for the tribes. I thought it better to leave but have a general Iuz import association that way I wouldn't be crunching out old campaign already there. They could be fresh or they could be forgotten or they could be part of a known local campaign group. I left out the details of the variant bullywugs because it's too specific to a location in my campaign world so I left it as is for now.