I say go ahead. I don't believe that maintaining a set of modules under CPAN under the "P5EE" label is going to make any difference in increasing mainstream acceptance of Perl as a platform for enterprise application development.
But I don't think this hurts, either. We'll still be in the same state, where developers can find multiple solutions on CPAN to the same enterprise problems. There's clearly no steam behind the idea of a "standard" enterprise Perl software platform. I applaud Stephen's efforts in this regard. -Jason