If the Blackhawks end up 4th/5th, they should think hard about Michkov. He's considered an uber-talent, possibly at the same level as Bedard (although that's not unanimous), but you have to wait 3 years for his KHL contract to be up and there's always the risk that something weird happens with Russian politics. But it's worth noting that pretty much every Russian player drafted to date who is worth bringing over has come over..
There's four A-tier talents in this draft, and despite some late helium for that Smith kid, I think there's a big dropoff between the 4th and 5th best talent. If you can take one of the other three (Bedard/Fantilli/Carlsson) then do it, but I'd rather see them wait/risk on Michkov than drop down to the next tier of prospect.
Bedard is obviously the main prize. I've seen some people say he's at McDavid/Crosby level as a prospect, but a lot of people have him a tier lower. He's a little on the small side and he's not an unbelievable skater. In terms of status as a prospect, he's better than Kane was when he was drafted (widely considered a weak-ish No. 1 overall).
Fantilli is just a textbook two-way center with size, speed, grit and skill. He'd definitely be a first overall pick in many years. Comps to someone like MacKinnon or Eichel.
Carlsson is even a little bigger than Fantilli, but not as physical. More of a playmaking center but not a defensive liability. Draws a lot of Kopitar comps, and I hate to say it but he reminds me a bit of a young Toews.