|Don't ask to ask, just ask|
do CPAN authors know the minimum perl required for their modules?
I would hope so. But what they might not know is the minimum Perl version for all of their prerequisite modules. But if each module knows a) its minimum version and b) all of its prereqs, then something like CPANPLUS (or, perhaps, CPANTS) could walk the tree and tell you if one of your prereqs needs a more recent version that the one that your are currently reporting.
What about old modules such as Net::Telnet will anyone release a new version of it just to include the META.yml
Maybe if it became a kwalitee measure :-)
"The first rule of Perl club is you do not talk about