I'm fine with one pack. The Comms figure from specialists looks just like an Inferno figure. Buy an extra Veers or use one of your Scout troopers or whatever. Iden came with an extra head and arms, the ISF will come with extra heads and 2 cards, I feel like the only reason to buy 2 boxes is for if you really want to play in a big tournament with 2 generic squads.
I'm actually happy all these packs really only need 1 purchase except the BX Command Droids. They look too good and too easy not to field 2 large units. And I don't think they'll be as easy to convert and won't have extra parts either.