This is entirely about satisfying my curiosity, but I'm wondering how many specializations people include when making a general plan for a character. For instance, for my astromech Technician to be able to eventually do everything I want it to, I'll want to have the Mechanic, Doctor (switched for cybernetics when the new book comes out), and Outlaw Tech trees. I might pick up the Slicer tree if the GM shows interest in getting more complex with slicing encounters. After I get what I want from those trees, I don't know where I'd go next. Meanwhile, I'm pretty sure another player in the game will end up with half a dozen specializations at least in the process of taking his character from Bounty Hunter to nascent Jedi duelist.
So how many specializations does your current character have, and how many do you expect to pick up over the character's lifespan?