I'm not sure what your definition of "impact" is - but being drafted 27th overall isn't usually indicative of a guy being a world beater
I am pulling for him because he is from my neck of the woods, and lucky for the Flyers, they have a lot of established guys and a lot of guys he will be competing with for opportunity, so he doesn't have to break through his ceiling for them to succeed. He might top out as an average 2nd line LW rather than a potential 1B type C like some thought he would be at the time of the draft. He has to compete against Giroux, Couturier, Patrick, Laughton, Varone, Rubstov, Vorobyov, etc. as a C in that organization. Other than JvR they don't have as many pressing LWs. Ratcliffe, M. Strome, Kase, etc. on the way but he will be in the thick of it.