Lathander would be delighted to have one of his own returned, with a new beginning tempered by the wisdom of self-reflection.
Asmodeus could have the Dark Eight, a cadre of pit fiend generals, handle the Blood War until a new Archduke is chosen. The court of archdevil Dukes and Duchesses in the Nine Hells would be super active as devil nobles reassess their political alliances and try to predict who is chosen by Lord Asmodeus next.