The Frenchie/Kimiko plotline was brought to its conclusion in the worst possible way. This season spent multiple episodes underlining that they weren't compatible, that Frenchie didn't really understand Kimiko's wishes and Kimiko wanted stability and didn't want to try and "tame" Frenchie.
Then out of nowhere Frenchie pulls out a speech about settling down in Marseilles, having three children and look here's the dog we can adopt! Oh no he died. What a surprise. It would have been considerably more meaningful if they'd spent the season building up them planning a life together in the background of other episodes a bit more organically and then oh no, heroic sacrifice. Maybe Homelander locks Frenchie in the radiation chamber and they find him collapsed and burned, instead we get the hackneyed "Here's a photo of my sweetheart back home"/"I'm on week from retirement" plot beat. Credit where it's due, Kimiko's actress did a pretty good job, but the whole thing was crap and it didn't need a goodbye speech.
I was also exhausted with yet another "Butcher's a conflicted person who's maybe not such a great guy and Hughie you have to be his conscience because you can hope" story, I didn't need to see Catwoman and Dogman sniff each other and talk about what they had for lunch for what felt like 10 minutes while MM and Startlight mug to the camera "this is craaaazy". Nor did I need to see Frenchie and a lobotimsed Sage discuss the merits of Love Island. The show also has introduced a couple of characters from Generation V, but I have no context for who they are besides the black girl being super powerful but then dismissed as not being useful because oh no, Starlight is cynical and disappoints the idealistic youngster who looks up to her (they already did this with Maeve and Starlight).
I'll watch to the end mostly to know how Homelander dies (I assume that's the ending) but the only characters I'm still enjoying are Deep and Ashley, and Ashley's on thin ice after this episode. Thinking about it, Deep's been consistently the most enjoyable character because he's usually got his own separate comedic plot going on that's relatively unrelated to the "main" characters.