Plans
This may begin with prose, and expand into something like a project plan at some point. This need not be a complete schedule, but it will make sense to include the steps and approaches, milestones, etc.
Dependencies
As mentioned in the Nuxeo Analysis and the discussion of Nuxeo Issues, the Nuxeo framework incorporates support for authentication (AuthN) and authorization (AuthZ). As a minor form of advance preparation for the possibility, however remote, that the Services Team may encounter issues - such as documentation shortcomings, implementation difficulties, or missing capabilities - in this support, one widely and favorably discussed alternative in the Java security frameworks space appears to be: In addition to JSecurity, Spring Security (formerly Acegi Security), and jGuard (built on Java's core JAAS) are among other, similar third-party Java security frameworks that appear to have received considerable mention. With all of these frameworks, a generic concern is how they might be made to serve as a replacement for Nuxeo's integral security support.
JSecurity is billed on its About page as "extremely easy to use and understand. An evaluating developer should grasp all the fundamentals within 10 minutes." (If true, this may enable us to fairly rapidly evaluate its design approach and capabilities, vis a vis Nuxeo's integral security support.) It is "POJO and interface based ... you can use it in any pojo container, servlet container, J2EE application server, or standalone application out of the box." This framework is licensed under an Apache 2.0 license, which may potentially be compatible with CollectionSpace licensing requirements.
One potential concern might be the state of user documentation (outside the Javadocs, which are claimed to be excellent) as of the current 0.9x releases. There is a long threaded discussion on that topic on the JSecurity-Dev list.
Test Plan
This should describe how the new service implementation will be tested. The testing here could include white box style test, unit test, and/or integration tests.