::MY might be what I tried to describe with %PAD stash, a dynamic symboltable for the current scope, making padwalker obsolete.
I personally believe that, as a side note, you may want to hyperlink to PadWalker by means of [mod://PadWalker], stressing incidentally that capitalization does matter.
And I think I can imagine what is meant lexical scoped packages, in perl 5 packages have no privacy at all, you can access them from everywhere. But if the packagename is scoped you may control it.
What a lexically scoped package is, after all, is clear and intuitive. But one point that perhaps I didn't stress enough is the following: if things are still like I claimed them to be, that is that lexical variables are implemented by means of a single magic package, then the latter must have a "slots" for... well, packages too, which sounded somewhat self-referential when I wrote my previous post. On a second thought, though, not just as much... More precisely, I don't see any issue with this circumstance any more. I don't know what I was thinking: anyway, before spending even the slightest braindrop on the subject, I'd like someone who knows better to pinpoint the key elements of it, which we just surfaced here.