Not “boring” for me but definitely ponderous. Each new episode feels like a chore I have to do, but watching always turns out to be more compelling than I imagined. There’s an analogy, but I won’t type it.
Killing Darlene makes sense if there’s someone else Elliot cares about (Krista) and they’re making an example of Darlene.
If Vera is in turn planning to use Krista as an example of what could happen to Darlene, this could be a twist on the “Mexican standoff” —which, if this where the story is going, I wish didn’t involve so many Damsels In Distress —although, to be fair, Elliot himself spends way too much time in trunks.
He should know by now to kick the tail light out to be able to see where the car is going and to also possibly trigger a traffic stop for a tail light being out.
Leon provided the drugs to Elliot with which he spiked Olivia's coffee. In another scene, Leon was wallpaper in the room with Vera and Krista. In other words, Leon was wasted; they could have had a stand-in for him.