Well, if they want the game to survive long term, or even more, increase the number of players, I think subscription removal is imminent. I'm sure many people would start playing or come back, because you just pay for the box. No more "I pay sub but I receive trash content!" comments.
But then, they don't get money from subs and tokens. So idk. But I dont see this game alive in 10 years with subscription model still there.