Theorizing and maybe wishful thinking here. 2017 got us Force Awakens Starters. 2018 got us OT starters. Following the pattern, 2019 would be Prequel starters. Additionally, with no new content coming out late 2018 for either OT or ST, and with the final season of Clone Wars coming, this may not be a bad time for PT.
From what I've seen, CW is better liked by the fans than the PT was, so if we get CW boxes my guesses for characters are: Obi-wan or Ahsoka and Rex or Cody. And for Villains: Count Dooku or Ventress and Super Battle Droid
If we get more of a traditional PT theme, I could see Anakin or Mace Windu and Clone Officer. With the Villains having Dooku or Darth Maul and Battle Droid Officer or Super Battle Droid.
Thoughts? Are these accurate? Is PT/CW totally off? What would you like/think we will see?