Regarding CS, no I don't believe he ever finished it. He told me that he sent the scenario to Spirderweb to unlock it - he'd forgotten the password, and they posted it (without the graphics file of course) instead. I encouraged him to finish it - as you said, it wasn't half-bad, and he said he would try.
I didn't hear anything back from him, so it seems this is yet another unfinished work due to, in part at least, the actions of Spiderweb. Bummer.
The version I have is last modified 1/17/2000 - I don't think he ever sent me an updated scenario, just the graphics. I haven't sent it yet - not forgotten, just have to get to it.