Jane could have said to Kenny that he wasn't dead, but I don't know why she didn't. I feel like she purposely wanted to start a fight with Kenny. If you kill Kenny, she says "I didn't know he would do that.", so I really don't understand why she didn't tell him. I also had Clem and AJ stay in Wellington, because Kenny wanted me too. On the other side, Arvo did shoot you. Even after you defended him (If you did.), so I could care less of what happens to Arvo and the others. Kenny was a dumbass this season, but I feel he just wants whats best. Plus, his whole family died. So, yeah.
I didn't mind Luke dying tbh. I feel like there wasn't much to him except to be a good friend, like Mark/Doug in Season 1 (even though I did feel bad when those two died.