You wrote, "I think you need to do a lot more reading and experimenting," and while that is certainly true (and will still be true the day I die) I hope you and others will consider what I write based upon its merit and utility rather than dismiss it due to my lack of standing within the Perl community.
You also wrote, "I'm not really sure I understand your motivation for meditating on this." Here in Chicago where I live, the authorities run anti-terrorism public service announcements which say "If you see something, say something," about the need for everyone to contribute to the public safety by reporting their suspicions. I noticed what I believe to be serious problems with the SIGHUP implementation in Win32 Perl. I have some suggestions for how to resolve those problems but I lack the talent, experience, and reputation to resolve those issues myself. I've not seen another discussion covering this issue in the same way. I love Perl even though I don't make a dime from it. I'd feel irresponsible if I did not say anything about this. I have to "say something."
Although I am a new member of PerlMonks, I've lurked here since Dave Roth was a Perl/Win32 "rock star." I know of your reputation as a current "rock star," and am thrilled by your attention. I believe if I can convince you of what I see as a problem, you have the "pull" to help get it resolved. So now you know my motivation.