Mission tables are very off to the side. Not a core system. They already lifted restrictions on Covenants. And corruptions are not making a comeback. They are on one trinket and had been on a couple trinkets before they even brought in corruptions as a focused system.
I doubt they will do covenants and Torghast again. And I feel like they could do Torghast right with a few tweaks. But more often than not, they throw out things that are that unpopular.