The kind of randomness I think is important

[ruinedmirage]

Randomizing the trash mobs will not really change how a dungeon plays out. How much does Halatali NM change when you get bombs versus getting lightning sprites versus getting chests after pulling a chain?

The following mobs are pretty much the only ones that change how trash fights go:

Summoners (Manor Claviger in Haukke HM, Illuminati Footman)
Crowd Controllers with hard to dodge aoe that inflict Stone/Terror/Sleep (Manor Claviger)
Bombs

While this is relevant to a point, imagine writing out the number 1 for 10 years, 8 hours a day...... would you ever ..... I dunno .... try a different style for a change? Make it challenging or different somehow, by either drawing a straight line in a different angle, starting from the bottom instead of the top, or add the serifs? I think the opinion of the OP is that running the same predictable dungeon over and over gets to be more than a little routine. Rewards be damned sometimes, maybe a new visual is all we need once in a while.