As to the inlining new code, and loops; I can easily see where that'd be undesirable. I was mostly thinking in terms of "ferreting out" issues, and simply "tracing" the code/program/script.
But then using perltidy to remove the extraneous comments, and such. Then unusing Smart::Comments before release. :)

Best wishes

--Chris

#!/usr/bin/perl -Tw
use Perl::Always or die;
my $perl_version = (5.12.5);
print $perl_version;