The new units are copied BW units (Lurker, Defiler, Arbiter, Firebat, Vulture) but less depth of strategy and more ridiculous "counter" units.
The campaign feels nothing like playing Zerg. It was basically Terran expansions #2 with Raynor and Kerrigan everywhere. Terran missions always put you in gimmicky scenarios and stopped you from playing an actual strategy game and this continues that even though multiplayer Zerg is about building an actual swarm. And please stop with this overdramatic, cinematic, expensive, far too long to release story. No one cares about the 'feelings' of Kerrigan.
All the features should have been on WoL release, such as being able to resume a game if their servers go down, and they still haven't caught up to Starcraft I with custom game lobbies, no DRM, lagless cross region play, full window chat channels, and the ability to play casually without endless queues (good luck playing anything outside the top 5 custom maps).
I'm so fucking done with Blizzard.
I only play Nintendo Blizzard Riot games.
