Although this plugin can let users to choose a baseline to build, but it's not easy to know this version is built by what baseline. The only way I know is to see the log.
The following are just some ideas

1. Put the baseline name in the description of a build, or just write baseline into description field.

2. When we create baseline in CC, we will write some description in CC. Is it possible to get it too and show in Hudson? Because baseline is generated by system, it's only some numbers and not easy to distinguish.

3. Show more information of baseline in build page (I mean this page http://wiki.jenkins-ci.org/download/attachments/37749162/changes.png)

4. Show baseline information in dashboard, not just show the build no. like #55