Flyers aren't giving away two players they need in return for two players they don't need.

It's a "FANTASY" team.
Flyers have an abundance of right D-men and little on the left side, so yes their needs on defense are the same as the Leafs, just opposite sides. Kapenen is an upgrade on right wing to the 2nd line as Konecny can switch back to the left side and if they need more, Jeremy Bracco is available to sweeten the deal. It means the Leafs will have to give up more to get slightly less, but it addresses their needs.
Leafs have an abundance of talent that will never prosper due to a logjam in all forward positions.... Kapenen is too good to be on the 3rd line. Johnson is a solid 2nd liner and Bracco can't even get into the line-up to showcase his talent. They are becoming wasted assets. use them to build defense.

I'm not sure what you mean by "FANTASY" team, because that would apply to every ACGM. I'm not complaining because that's what ACGM is for. But whatever, if you like trying things just for fun then go ahead.

Aside from that, all of your statements for the Flyers are completely wrong. Flyers are loaded with left-handed defensemen and are in need of good, young right-handed defensemen. Provorov goes on the top pairing on the left side, then Sanheim, and then Hagg/Gostisbehere. Not to mention we have Cam York and Yegor Zamula who will be NHL ready next season or the season after. For our right-handed defense pairings, Niskanen is on our first pairing, then Myers, and then Braun. Myers is important to us because he's our only young and promising right-handed defenseman. Niskanen and Braun have been great for us, but they aren't staying here long term. Niskanen isn't being moving next year and Braun could very likely resign with us if he's cheap. I'm not sure what happens the year after, but we could be in trouble. Sanheim may be capable of playing the right side, but either way we're not moving Myers unless we're getting back Liljegren, along with a few other assets in the deal.

As for our forwards, we don't need or want Kapanen and we're certainly not moving Frost. He has a pretty good chance of being better than Kapanen. We're already loaded with top-six forwards and adding Kapanen will just make more of the mess. That includes and is probably not limited to Giroux, Couturier, Voracek, Hayes, Konecny, and Lindblom. I expect Lindblom to return next season and if he doesn't then Laughton can be up there. Yes, he's better than Kapanen as of right now. Laughton is a about as good as Kapanen offensively, he can play center, and is good at faceoffs. We also have a ton of young guys who are projected to be in the top-six. Many of them are playing great and they are not getting their opportunity because of everyone else playing great. Our forward log-jam is worse than yours.

To be honest if there is anything that I want for the Flyers right now, it would be a dynamic forward and right-handed defensemen prospects.