Not too sure but I personally enjoy it as a newer player. Seeing ppl as surprised as I was the first time one of the dragons punted me to my death and getting ready to brez tanks who die from the giant boss’s molten mace mech never gets old. 
The physical run time is a bit much, just too long with too much trash. I don’t mind the encounters but last boss seemed so much harder than the rest as well. It’s going to be an absolute show dealing with xalatath spawns in the last room + 100 tentacles + regular encounter adds spawn.
It’s not bad though, and it feels topical to revisit an old dwarven fortress in this decidedly dwarven feeling expansion.