Yikes.
Why would Islanders trade Hamonic knowing they can re-sign only one of Byfuglien or Okposo?! That's like a doom trade from the beginning. I do think Morrissey is going to be great, but hard to argue that prospects =/= NHL players. You mentioned Avs with the O'Reilly trade correct? Well both Grigorenko and Zadorov were NHL players when they were traded. Have both been handled poorly by the Sabres? Absolutely, but we can say that both plus Rantanen could all be in the NHL right now if Avs really wanted to.
Plus Islanders are further along the rebuild than Jets or Avs are. Why would they want futures coming back is beyond sense to me? Especially when they already have a good enough prospect system to begin with. Hell, they just traded Reinhart because they had no room for him. Jets do have a lot of quality pieces they could use as trade chips (or keep to develop), but in the end your trade just comes across as quantity versus quality.
I really hope you're not seriously here. Hamonic is closer in value to RNH or Draisaitl than Eberle is to Hamonic. If Eberle is traded, I would expect it to be for a defender like Gardiner. Someone who's NHL quality, and put up some points, but has some major holes in his game.
I absolutely love Hamonic (one of my favourite players in the league), but you don't trade Barrie for him except if Barrie goes full brainwash from Newport. Offensive defenders just have more overall value than amazing defensive-defenseman. Subban, Karlsson would all go for more than someone like Suter, even if Ryan is the better overall defender. Only exception is when Myers was traded for Bogosian, but even then Myers probably had as little value as possible.