Band of the Hawk is better on harder difficulty. The base difficulty is a button masher....harder levels actually require some resource mgmt and blocking and dodging. When i played thru on normal, i don't even think i used a consumable or side weapon the whole playthrough.
if you get bored sometime you should watch, or maybe even react, to particularly VaatiVidya's lore explanation videos on Miquella and the one about the "secrets of the shadow of the erdtree" trailer and you'll understand so much more about this DLC and this story trailer.