The .mvn directory is needed to be able to use the ${maven.multiModuleProjectDirectory} property....

 various properties files. What needs to be done is to encapsulate all of this in the POM.

 Typically users parameterize the use of plugins, or have custom values like ${user.name}
 for use in elements like the <developerConnection/>. It would be idea if we
 could encapsulate everything we need about the project in the POM including
 plugin parameters and anything else.

  DefaultExpressionEvaluator used within. See the above discussion for more
  on why this evaluator is bad. We need to provide either an alternative
  implementation under a different roleHint, or else replace the
  BasicComponentConfigurator.

* Other

  We may need to define a new lifecycle/phase to contextualize a mojo right
  before it's used, and reset it's state afterward. Up to now, the approach

  .
  .
</plugins>

h3. Other issues

We need to look at Maven, and Nexus as use cases and figure out what each of them needs to be able to do

* now what is really the difference between this and loading a component in plexus
* do we want a model for sharing information among plugins, is this more like an extension point
* do we need a sort of bus for application data