I wasn't blown away by the latest episode, but I'll content myself with the easter eggs... Most especially the Harley Quinn dialog in the background...
I really, really liked the concept of the Suicide Squad comic back in the day, if not always the quality of the script (which, sadly, was often overshadowed by DC's current mega-crossover event). I'm not completely thrilled with the iteration of the team that's been introduced in Arrow (especially their take on Bronze Tiger, making him into a remorseless killing machine... Which might fit the character at one point in his career, after being brainwashed by the League of Assassins, but was never really the case during his time with the Squad... Just sayin'), but I'll take what I can get.
Yes, Sarah's almost certainly going to die. That was pretty clear the moment she showed up as the Canary, when we all know it has to eventually end up being Laurel in that identity. Slade could very well be the one who offs her. Sarah becoming Ollie's current romantic interest increases the chances of her death coming sooner rather than later. The odds of her living beyond the end of this season are slim, but the writers could drag this out for years, if they really want to.
Ollie's not going to kill Slade. He may try to kill him or Slade may have an epiphany and decide his quest for vengeance against Ollie is over... But Slade's not going to die. Ollie may even think
he's killed Slade, but it's not going to happen.
Overall, it's strange to me that Waller would decide to go through so much trouble to blow up the chemical weapon. I imagine there were easier ways that wouldn't've cost her the entire team (expendable or not) plus (at least) dozens of civilians. Even if she considered Deadshot to be totally expendable (which isn't such a stretch), I would think she could've done better than that without much extra effort... But that's just my thinking.