I don’t know how to make an “assessment” here, beyond my original comment, which by the way was not intended to be personal.

I have, in fact, taken several long, hard looks at Perl-6 now, and my take-away is simply that, once any language comes into a production setting, such that literally millions of lines of mission-critical code are written in it, it never goes away ... and it never successfully transforms itself into something significantly different.   It does not matter if the “successor” is claimed to be much better.   (It does not even matter if it really is.)   What matters is a vast investment in reasonably bug-free source code that must now be protected and maintained.  

Perl went quickly through many “nothing much” incarnations until ... Perl-5.   Then, it reached critical mass.   Having done so, it will now be with us, as it is, for an exceedingly long time.

I once worked at a shop that still licensed IBM’s FORTRAN-G compiler ... because they had a large and important system that was written in that dialect.