Regardless of what our speculations are, we are going to be getting lots more units. Be they, Dark Troopers, Beach Troopers or Bespin Guards, they are coming. And I am excited for them and I want all these new units to be cool. But as I look forward in time what I really want for this game is for these iconic units from the initial release to still be relevant. You may not be very familiar with X-wing, but if you go to an X-wing tournament you won't see any X-wings, or TIE fighters or much of any of the core (and early released) ships of Star Wars.
I feel this way for two reasons , firstly for thematic reasons. This game just won't be telling the Star Wars stories that I want it to if there comes a time when Stormtroopers are a unit that no competitive player brings. Additionally I just spent ove $200 to get two starter sets and a couple of extra troop expansions so I could play this as a full game. It would be sad if when say DarkTroopers come out, I have to spend a lot more money to completely replace my Stormtroopers because they are now obsolete.