My expert lures are gathering dust in the bank, because the loot is not worth getting. This is fine.
But notice that the same situation prevails with expert dungeons. I still run them, however, for attunement xp and plaques (also = attunement xp).
I suggest that expert rifts award both direct xp, say, 100K per rift, and a few plaques, as well. Then they'd be worth doing!