Breaking down the Konecny extension -- good move or mistake?

On Thursday, the Travis Konecny contract saga reached its conclusion. And predictably, it ended with Konecny remaining with the Philadelphia Flyers -- for nearly another decade.
Konecny's new eight-year, $70 million deal is the largest total-value contract ever given to a Philadelphia Flyers player, just barely clearing the $69 million deal that then-general manager Paul Holmgren handed Mike Richards in December of 2007. (It doesn't quite match the $110 million offer sheet that Holmgren got defenseman Shea Weber to sign, but Nashville ultimately matched and Weber never played a game for the Flyers.)
Now, current Flyers GM Daniel Briere has set a new franchise monetary bar -- and with it, pro...