It has to be a specific pick, and it has to be something that's guaranteed to be on all characters.
If you want it to instead display whatever example the user selects from a category of things (such as from a chooser), you can't put the template there directly - your template will instead be a table entry in a table that has only one item.
If that doesn't work, I'll have to spend a bit of time explaining how the agent linkage mechanisms work, so you can build something like the Pathfinder/d20 class tabs.
For the most part, I need the features thing to display text. So I think template is the right way to go. Basically its displaying what additional skills the Space Marine gets training in. This system is much less complicated than Pathfinder's class system. When a user picks a specialty for a space marine, they get what they get. Kind of like how character classes in 2nd edition worked.
The only thing the user picks is the Special Ability (A solo mode or squad mode ability) and I left that in the abAbility table because it works fine like that, I figured no sense reinventing the wheel on that. I still need to figure out how to put prereqs on the special abilities so only the valid options are selectable for each specialty but I'd like to get the basics of the tab done before worrying about that. Deathwatch Specialty's are basically simplified character classes, like that paths that Dark Heresy characters get, but they're fixed paths without any branch points between ranks. If you're a tactical marine, you're a tactical marine for the duration of play.