As with any game with "careers", "classes", or what have you, what you call yourself and what your character sheet says can be two different things. Nothing you've put forth can't be done with either specific or generalized careers. Just because someone makes a bounty hunter/assassin doesn't mean he needs to call himself a bounty hunter all the time or even hunt bounties. He could just be an assassin or even a mercenary. Much like Luke went from being a fringer to a jedi, anyone else could do the same on their path and still call themselves a jedi. Or they can build a character that starts with a jedi career once F&D releases and call themselves a jedi, or a gray jedi, or whatever.
I'd be very surprised to see a bunch of Force-using unispecs. That seems very much against their design intent as seen so far. As far as duplicating specs, they could do so, or they could tweek them to add Force aspects to them. If they added the pilot to the Guardian career, for instance, they could leave it as it is, so if you took the spec you would not gain a Force Rating. Or they could change it to a Force Pilot spec and you could, potentially, gain a Force Rating like taking other Force specs.
Actually this brings up something else I've been thinking of. The Force unispecs as we have seen so far do not give any skills and only the initial Force Rating unless you already have a Force Rating. The new career specs will, in all likelihood, have skills with them. So will they give both a Force Rating and skills when initially taken? Or will one have to make a choice upon taking a Force spec initially? Take the Force Rating if it is the first Force spec and not get the skills or take the skills because they already have a Force Rating? I'll be interested in seeing how they consolidate that. Giving both will make the specs in F&D a lot more attractive than unispecs which do not. Even giving the skills will do so.
There is nothing wrong with repetition. They can do Jedi careers and have Jedi as part of the F&D "commitment" mechanic to show you are dedicated to the Jedi Path. But then again, by the time F&D comes out, I could see a hired gun/bodyguard with a "commitment" to the Jedi Path because he believes and follows all the stories he's heard and tries to live his life in their mold. Or many other combinations. The only limitations are the ones you set on yourself.
Edited by mouthymerc