I take this all day long as a Hawk fan. Demidov is to much of the same size and shape as Bedard, Nazar, Moore, and even Reichel for me. He ultimately may end up a much better NHL player than any of those other than Bedard, but that is far from certain and at some point you have to believe in your own evaluations and prior draft picks. This probably means you won't get Levshunov, but end up with no worse than the 3rd D out of a draft that concensus is 4-5 prospects with top pairing potential in this draft. Parekh or Buium honestly may be more of a fit long term for the Hawks who need another option to run the PP if Korchinski does not develop as hoped.
I would not hate coming out of the draft with Parekh (prefer RHD given what Hawks already have on D and if he and Korch both hit they can play on the same PP), Mesar, Barron, and whatever best player available at 20, 27, & 34 if you can't attach a 2nd to move up a few slots to get a better forward in the mid-teens area.