No, Waver's case was special. He didn't actually kill him and he made a temporal deal with the other surviving family member, who besides getting a partly damaged Family Crest, actually benefited a lot
from Kayneth's death as she gets to become the family head, as well as getting a loan to purchase Kayneth's class.
Probably if you outlast them it's going to be worse and they will try to kill you/ruin your career. If Kayneth had survived the war, he would have made sure that Waver was either killed or would have removed any chances of him ever stepping into the Clock Tower ever again.