This is like some form of poetic justice. On a personal level, Stukov and Kerrigan are the two people Duran/Narud screwed with the most He used Kerrigan like a lowly pawn, and he personally killed Stukov after making him look like a traitor to the people he fought for, then experimented on him. I wouldnt be at all surprised if this was the reason they brought Stukov back into the game
Did anyone else get Dragonball vibes from that beam clash between Kerrigan and Narud? Only for Stukov to intervene and hinder Narud, enabling Kerrigan to release everything back at him? Seriously, this mission was like the conclusion of the Cell arc!
And he wasted drone too much to construct spine crawl for defense. Instead he can change swarm host to fully burrow mode and use it with lurker for defense, they defense much powerful and faster than spine crawl alone.
Actually, that was Kerrigan before New Gettysburg... And Narud is a shapeshifter, he can disguise himself as anyone with 100% accuracy of likeness... Think spies from Red Alert 2 or 3 except no disguise kits, just ancient alien bs...