They have made WHM and SGE slightly more appealing before, with a short phase dps check that's outside of 2 minutes like p4 TOP.
You can choose to run SGE/WHM and move Phlegma/Misery into the phase if you're struggling with the check. Because outside of 2 minutes, SCH and AST dps is nothing special.
If they make more short phase dps checks where you can't rely on 2 minute alignment, that makes SGE more appealing than SCH in groups with weaker damage.