The tracker plans were shifted drmatically during fremantle development and it's really just metadata harvester/db, not a FTS system. It's easy enough to re-enable FTS, but it comes with a cost in indexing times, which was not an option. So, instead the advanced tracker use went to harmattan. What I would like to see us doing is upgrading in fremantle to the harmattan tracker at some point next year so that you devs would be able to start using the wicked cool stuff tracker 0.7 has available.