I remember the "skipping version 9" in windows was due to many developers using "startsWith(os.version(), "9")" (pseudocode obviously) to detect windows 95/99 and therefore they avoid using version 9 in order to remain compatible, but I might remember wrong.
Unfortunately, "Perl 7" was a "thing" in the discussions before the name change. IMO, going to "Perl 32" makes more sense, as it actually reflects the current version numbering scheme. Or refer to the year: Perl 2020.
If Oracle had "bought" Perl they'd probably renamed it to Perl 32 by now and sued everyone else for using sygils.
The current numbering scheme uses odd minor version numbers for development versions and even for stable, just like Linux used to, until Linus got fed up with 2.6 after 8 years. Now it gets a bump whenever the minor version sticks too much.
PHP did the same thing, skipping from 5 directly to 7 because PHP 6 ended up being a dead-end. It was pretty painless (at least as far as I could see).
“A foolish consistency is the hobgoblin of little minds.” — Ralph Waldo Emerson
Well, the features in Raku ARE what would be (and was) Perl 6. Perl 5 most likely won’t inherit these features as the benefit of Perl 5 IMHO is that it is stable and ubiquitous.
Raku has some pretty amazing things going for it though. It is unique compared to any programming language with its grammars and such.