Sith ships or sith characters?

Sure, they were farmable in theory if you were able to finish top 5 in both arenas, averaging around 800 crystals a day everyday of the farm. We know in marquee events you get the character at 3* with the one time pack available to go 4* and the crystal pack to get up to 7*. If you're getting the appropriate amount of crystals, you should be able to buy enough packs to get to 7*. In this case, no real difference from the Jedi Revan event if it serves as the big event at the end of February.