Among other things, POD does not support indentation

Sure it does -- in a Pod format block.

Perhaps, but that particular definition of "indentation" is ... shall we say, a lot more 'loose' than the originally intended definition, which can be illustrated as follows:

=for comment
This comment
    can be indented
        as much as I want
            and even more than I want
=cut

for(0 .. 4){

    for(0 .. 3){

        for (0 .. 2){
=for comment
            However, even though
            "indentation" is supported here,
            we still have those dangling
            POD delimiters way back over there.            
            <- <- <- <-            
            
            Attempting to line them up with the 
            rest of the code produces an error.
            
            This is not good because it breaks
            'code-folding' in the text editor.

            It also looks just plain ugly.
=cut                    
            print "$_\n";
        };
    };
};
__END__
[download]

Moreover, one has to consider whether the POD in this illustration is even well-formed to begin with. Should this be a format block? Will begin/end work? Is 'for comment' sufficient? Will this mess up the POD documentation? *Way* too much hassle when all you wanted was a *comment*.