They're on Mentor Roulette, in theory. Part of the stated goal of Mentor Roulette is to help fill queues for content that's having a hard time filling otherwise, though I haven't personally wound up in a tower raid from this yet. (Probably because there are so many more queues firing for other content.) Between that and the exp reward for the bosses now, it would seem like things should be a little better. Has anyone noticed a real difference?

I would support a roulette specifically for these though.