JAXB 2.0 prerequisites
As i understand, JAXB 2.0 is planned to be a part of J2EE5.0 and J2SE6.0, as well as a standalone distribution.
1. Make only J2SE 5.0 prerequisite for JAXB 2.0. Requiring Mustang features will seriously undermine JAXB 2.0 exposure.
2. Modularize WebService Pack installer - selecting a single package (say, JAXB, JAXP or SAAJ) will install only the needed parts. The current state - take everything in jaxb/lib and shared/lib is an overkill.