That's all she wrote for Destiny's Wrath of the Machine raid challenges, at least for now. All that's on the docket going forward until Destiny 2 (?) is Vosik and Aksis, the latter of which debuted this week.
The kicker is that it's actually a challenge this time around. Unbeknownst to a lot of players out there, the Aksis phase two fight had a hidden mechanic -- select people who were not on the same side as the boss, and thus, were not slamming him, have the chance to slam the plate that the Servitors end their journey at, to grant the entire team instant supers.
As you can imagine this requires a lot of communication, beyond what the Aksis encounter already needed. And it's wonderful.
via destructoid https://www.destructoid.com/destiny-s-aksis-challenge-for-once-feels-like-an-actual-challenge-398394.phtml