Flyers fan here guys.
Coburn is an excellent defensive dman, when he's paired with a good puck mover he can focus on his strengths. When he's asked to be more of an offensive dman is when he gets in trouble and has brain farts. I think if you pair this guy with Hedman, watch out. Coburn is huge, arguably the best skating defensemen you have (he's that good), and is a MUCH better player in the playoffs compared to regular season. He isn't overly physical, just very sound positionally and can skate the puck out of trouble.
I'm treating Gudas a throw in here, I don't even really want him on the Flyers TBh.
This isn't as big of a "fleecing" as some are making it seem. You will soon find that out. Rooting for Coburn, he was the longest tenured Flyers. Great guy too.