You don't seem to understand how much more valuable Hischier is than OEL. You also don't understand that there's a very real chance that OEL gets traded while there's essentially no chance in hell that Nico gets traded. If a team like Dallas had won the 1OA pick maybe they do something around Nico for Keller and OEL (maybe Dallas ads something small). For NJ however even that wouldn't be interesting. The only way Shero doesn't hang up immediately is if it's some ridiculous offer like Keller, OEL + unprotected 1st. That's the kind of overpayment you'd need to get Nico from NJ. There are probably less than 5 players who hold more value to their franchise than Nico does to NJ.