Speculation requirements new legendary and hero/villian journey [MERGE]

If its a heroes journey then most likely there will be some legendary toon required that needs the opposing faction (r2/cls, bb8/jtr). So I would guess first you would need sith marauder, assassin, trooper, sion and nihilus to gain the legendary toon required for revan and then probably most of these new releases... geez I thought after 2.5 years I'd feel like I was making some sort of progress in this game but with the slow turnaround from marquee to farm (and most of those toons going to hard node farms, I feel further behind than ever).