When the Devs answered a question during the Q&A about the Galactic Hero buff to JTR, CLS, Yoda and Anakin in the Sith Raid, they said this:
“As we recently detailed in one of my posts, Raids are time capsules. As the game changes, teams and squads that were once relevant in the beginning may drop out in favor of squads that have recently become relevant. The Galactic Hero tag may not seem relevant now, but may become relevant later.”
I may be reading too much into this comment, but that seemed like a RotJ Luke hint to me. Maybe not even an intentional one.