We may not know the finale’s details, but we do know that things are set to change for Season 6.
That would be something that would definitely shake things up and allow for a fresh start, provided that’s the direction Arrow is truly heading.
Stephen Amell and Arrow showrunners have been clear that Season 5 will be the end of Oliver-centric flashbacks and Season 6 may mark the beginning of other changes as well.
Sure, killing a major character has been done in the show, but a mass destruction to a bulk of the cast?