This season feels very mailed in. They added one boss, a reskinned vault 4x, a storyline that can be completed in a few hours, a holiday event that takes less than an hour to finish and a pet that boosts all of your stats or copies all of your stats to deal big damage.
The only thing keeping it interesting for me are the tremors which ought to be permanently in the game and the chance to try a few new builds out. Having fun with lightning storm and rabies combo. Might give a fire and ice sorc a look next, but not going to be playing nearly as much as S2 which was much more alt character friendly.