How about coding like this? 

our $Customer  = 'My::Company::Namespace::Customer';
our $Preferred = 'My::Company::Namespace::Customer::Preferred';

my $cust = $Customer->new;
my $pref = $Preferred->new;

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This isn't too bad from a usability perspective. It requires no cleverness to get the correct first arguemnt to the two new subs. It might make updating your code to use a subclass a little easier.

Variations on this idea: a constant. Or a sub that decides at runtime which classname to return.

In reply to Re: Module Naming Dilemma by gaal
in thread Module Naming Dilemma by Ovid

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