So what part of

the parameter 'new_page_func' must be a function reference

makes you think that passing a hash reference to it is the right way to go forward on this?

I looked into the source code of PDF::Table and it directly calls the new_table_func reference whenever it needs a new page:

if(ref $arg{'new_page_func'})
{    
    $page = &{$arg{'new_page_func'}};    
}
else
{    
    $page = $pdf->page;    
}
[download]

... so, if you return to my above example, and modify it as follows:

    ... new_table_func => sub {
            my $next_page = $pdf->page;
            $next_page->rotate(90);
            return $next_page;
        },
[download]

that should be all you need. But feel free to pursue other approaches at your leisure.

OK, I am confused, could you add your implementation to the code I submitted and post it here so I can follow you?
That would be nice! Thanks!!!