Again, I'd be surprised if we ever saw Sluissi. They're hardly iconic to the setting, and they're not a film alien, so trends suggest FFG'd look elsewhere. If anything, we'll see one of Sluissi, Verpine, or Squib, and the latter two are far more prevalent in Legends than the Sluissi are. But, hey, we've got both an Engineer book and a Technician book to look forward to, so who knows? Maybe we'll get two of the three. Personally, I'd prefer the bugs and the furballs.
Second, I wonder if they might port the Rigger over from the Ace book as one of the Technician's specializations. Or would that be too similar to Outlaw Tech?
Unfortunately you make a lot of sense, I see it the same way.
It's going to be interesting to see how they create so many different specializations without too much overlap. I don't have a problem with one out of three specs per book being reprinted, but I don't want four different specs that only differ in two talents each.