Sadly, text properties files do not allow freemaker in them. I can think of some sneaky ways of doing what you want - for example creating a custom component that wraps the standard "Top Category Experts". You can use freemaker in that custom component to put in whatever header you like, then use CSS to hide the headers that come with the core component. Not the most elegant solution, but it would work :)
I got lucky :smileyhappy:. I found that if I set the title to "{0} Experts" the zeroth argument is the object title. So provided this isn't stupid chance, and something I can rely upon, I think I'm set. Thanks.
