Guess what y'all, Rose is on her way too and i don't think nightsisters will be required to get her.
So, when something like a Nightsisters event drops everyone gets panicked because they weren't expecting the event so they are not ready. It happens.
However, as I was trying to beat the Commander Luke event, I was already wondering what the next one would be and who it might require. Not long after that, Hermit Yoda got his release. Hmmmm...
Furthermore, I started thinking about who else might get a hero's journey type of event. Rey? Kylo's story arc is still unknown to us. Then two veteran smugglers were released out of the blue for no apparent reason. Hmmmmm...
The fact is, while some of these events are not predictable (ie Nightsisters), some of them absolutely are. There are still more movies in the works that will include characters who are not yet in-game such as Rose, Snoke, Hux, Young Han Solo, Young Lando, etc. For most of those, its fairly easy to guess who will be needed. If and when they drop i guarantee someone will shout foul because they lacked foresight.
The First Order and Resistance are both good teams. They are both required for mod challenges. If you've been playing for a while, you should have both teams already. You know they will continue to be required for future events.
On the other hand, if the Veteran Smugglers are required (I think they will/should be), and they are not made farmable in time, it would be a slap in the face to the entire game community.
But, If they are made farmable in the coming weeks and you don't farm them regardless of a requirement announcement. It's your own fault.