Amanda Waller was definitely preparing for the worst when she formed the squad: if and when heroes become villains.
I wasn’t satisfied with the Enchantress as the main villian in Suicide Squad because I was hoping that the squad would actually fight a hero-gone-bad. Plus, she didn’t seem as intimidating and evil as Raven.
If Raven does show up in Suicide Squad 2, it would also be cool to see Trigon – her demon father – try to take over the world and turn Raven evil.
I don’t care if there are Marvel fans who’ll think that Trigon “is the Thanos of DC”, because unlike Thanos, Trigon doesn’t need any power-enhancers when he already has the power to reign darkness over the world.