I disagree with that idea. The user should know well what type of object it's creating. If you want to make a creator wrapper, to make the code easier, is better to create something like that:

  my $oo = wrapper::package() ;
  
  ## that can be something like that:
  
  my $oo = new::Button() ;
  my $oo = new::Label() ;
  ...
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Soo, you won't polute namespaces, and can make an automation of the package names that new:: will handle, since you don't need to implement any of the methods (Button, Label), you just use AUTOLOAD. Also you can make new:: load automatically the modules, soo you don't need to make use Button, before create it.

But I still preffer the normal way! ;-P

Well, I have just released Class::HPLOO for a easier way to declare classes and PerlModules. Maybe this can be useful for you.