Though I share merlyn's reservations about the idea in general, I think it's worth pointing out that the OP's aliasing method doesn't break inheritance, but this one does: if a subclass overrides the main spelling of the method, the alternate spellings should also be directed to the overridden method, rather than bypassing it. As an alternative approach that combines something approaching safety with reasonable typing economy, I'd try something like this:

_make_aliases('real_method',qw(foo bar baz blort));

sub _make_aliases {
    no strict 'refs';
    my ($main_spelling,@alternates) = @_;
    foreach my $new_method (@alternates) {
        *{$new_method} = sub { my $self = shift; $self->$main_spelling
+(@_) }
    }
}
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This approach should (I haven't tested) let subclasses safely ignore the aliasing entirely, and just override the main method—though any diagnostic messages may still be a bit confusing. And it still provides the economy of keystrokes that the OP was looking for.