See, this is where we disagree. What "hole" is caused by trading Sean Couturier? The role of a 3rd line, checking center? We currently have Max Talbot who can slip right into that role and we have Scott Laughton waiting in the wings who could end up even better at that role because of his skating ability and edge. Christ, if worst came to absolute worst, the Flyers could have Adam Hall fill that role as a stop gap.... or the Flyers could trade for a player like Mark Letestu, Boyd Gordon or Antoine Vermette if they really NEEDED to.
Do you forget what Talbot is like at center? He is HORRIBLE. You know how the 3rd line centered by Couturier actually gets out of the D-zone and establishes an offensive zone presence? Kiss that ability goodbye; hell, they're doing it now first with Talbot as an offensive anchor and now with Simmonds looking like he's forgotten what the point of hockey is. Also, kiss the ability to neutralize top players goodbye. Laughton is a hell of a lot less proven than Couturier, assuming he could just replace him is baseless. Couturier's skill set is more unique than you realize, as Appleyard has pointed out repeatedly. There is no other 20 year old that does what he does. I cannot, off the top of my head, name another 18 year old that came into the NHL and did the same stuff defensively. Only Clarke comes to mind immediately, and he was freaking 20 when he started.
All of your solutions here make the team a lot worse. We would have 2 top lines and 2 fourth lines...ask the Caps how that works out, and we don't have Ovechkin.
You honestly don't think having a top like winger like Ryan or Eriksson would help this team significantly more than keeping Sean Couturier as your 3rd line checking center? Wow.
Pursue Ryan for free in FA.
And again, you're clearly underestimating how much impact Couturier has. Remember when the Pens traded Staal and lost their depth? Observe now how they fold immediately if someone has a Couturier-like player who can eliminate their stars and force them to rely on depth.
You'd be turning the Flyers into a 2 line team, and that's a step back. Also, it's not how you rebuild. You do not rebuild by trading high potential young players because you're impatient
now. The team is years from contending. They are not one or two moves away from realistically making a splash. Build through the draft. Build through FA. But most of all, BUILD. Don't scatter vital pieces away in what would be a lateral move at best.