BLM needs some kind of bonus that accumulates or fires off each time you spend any number of umbral hearts, so that it’s
both worth it to use B4 every rotation on single targets and worth it to cast F2 twice before Flare on grouped targets.

It could be an accumulating buff to personal damage or a penalty to the target’s magic resistance or even “free” seconds of Foul charge time so that Foul benefits more from spellspeed, I dunno. But Blizzard 4 is currently the most glaring weakness in BLM design.

Oh yeah, and I want UI options to put Leylines/Between the Lines on one button, and Enochian/Fire4/Blizzard4 on another single button.