Firstly, I havent "studied" this product yet, so I only have a vague
understanding of how it functions.

It may just be the way I am interpreting your sales jargon, but it appears
that the Zinc package comes as a trial "copper" package that will downgrade itself at 30 days.
I dislike this idea greatly. Zinc should be bundled with free-ware "material" only.
If you want to bundle a level for demo purposes, use crude or freeware levels/models.
If I want trial-ware, I will download trial-ware, and delete trial-ware when it expires.
This is my personal out-look on trialware "stuff". Its just dirty...

Next, "this" page advertises Zinc as "...unlimited entities and unlimited nodes",
but the page behind the "more..." link says only 999 entities and 999 nodes per level.
Are they both right? Or is one page incorrect/out-of-date?

Now some technical questions.
1> Does Zinc allow run-time creation/removal of nodes?
2> If an entity loses his path, due to node removal or getting "knocked off" the path,
does he head back to nearest/easily-reached/default node on his own?
2a> If not, could we users code a way for this to happen?
(eg lost entity will create a temporary-private node at his own location,
that is connected (at some point) to his original path, which he can then
follow and which will delete once he sucessfully reaches his old path)

Thanks, it does look good. So keep up the good work.