in other words, I want the call to "helper" in "execute()" to have arguements filled it for it without the user filling them in for himself, such that "helper" would be called with arguments ($self, $other_arg).

This boils down to: MyPackage has to remember the arguments.

Well, I would write a wrapper for that. Store the args in $self.

sub execute{
  $self = shift;
  $coderef = shift;
  if ( @_ ) {
     $self->args->{$coderef}=\@_ ;  #or [$self, @_]
  }elsif ( ref(my $args = $self->args{$coderef}) eq 'ARRAY') {
     @_ = @$args;
  }
  return &$coderef( @_ ); 
}
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Hope this helps,

Jeroen
"We are not alone"(FZ)