I know that you can only speak for yourself, but if the Perl 6 community deems Rakudo a good testbed for the specification, that's something an ecosystem can be built on.

Every implementation is a testbed for the specification, and different implementations focus on different aspects.

Rakudo is just the one that focuses on wide spread usability.

We are also working on a module ecosystem. There's http://modules.perl6.org/ with a list of modules we know about; there's a prototype module installer being worked on, a prototype smoke tester (results here) and so on.

It's just that most of the people that are motivated to work on it are involved in far too many other Perl 6 projects, and so often only allocate small time slices for the module ecosystem.

If somebody wants to shape the Perl 6 ecosystem, now would be great time. We have some modules, and people are asking how to install them. Stepping up now and writing runnable code for a module installer or a module repository would surely be a greatly appreciated by the Perl 6 community.