There are changes to Crucible, including an entirely new PvP playlist setup, new events, and modes with modifiers. There are no new strikes because the developers are focusing on solo players with the introduction of Solo Ops. Instead of adding one or two new strikes, they’ve introduced five to ten Solo Ops, which fall somewhere between a strike and a Lost Sector in terms of scale. A core activity focused at solo players has been requested for a long time now. It’s hardly a bad thing that this expansion breaks from the formula.