I think this is the list of centers drafted in the last 20 years who were good enough (subjectively) to be a contending 1C:
McDavid (1), MacKinnon (1), Matthews (1), Crosby (1), Hughes (1), Stamkos (1), Bedard (1), Hischier (1), Tavares (1), Eichel (2), Malkin (2), Barkov (2), Draisaitl (3), Stutzle (3), Backstrom (4), Pettersson (5), Zibanejad (6), Scheifele (7), Couturier (8), Kopitar (11), Larkin (15), Barzal (16), Thomas (20), Ek (20), Giroux (22), Thompson (26), ROR (33), Aho (35), Hintz (49), Point (79)
It's
hard. JT Miller really isn't a center; Kopitar was ranked 3rd by Columbus and passed on for Brule because the GM didn't want to draft a Slovenian over a Canadian; I personally thought Thomas was a top 10 prospect, but admittedly, I was bullish. Finding those 1Cs outside the top 10 (and ~half are top 5) usually amounts to archaic scouting, anomalous development arcs, historically good drafts, statistical undervaluing, and mostly goddamn luck.
I don't think they NEED Auston Matthews. They're already committed to not getting one (giddy about not paying $12MM actually). I think Couturier-Giroux or Ek-Kaprizov is a championship C-W combo, with a deep team. But even the low end 1Cs are hard to find too, and obviously you need a superstar wing. Couturier will be turning 34 when Michkov starts his career. The Flyers only real path is to trade every fungible depth guy not bolted to the floor -- they're reluctant to do so -- for picks and pray they (and not another team) hit on that once every 2-3 year player. Doing so while the current core, including development time, approaches 30+.