First off, I still wouldn't do Hamonic for Eberle. In fact, we could have gotten Hamonic for Taylor Hall, and I'm glad we didn't do it. As someone who has watched plenty of Larsson when he was with the Devils, Hamonic > Larsson. It's close, but Hamonic is better.
Second, I like Eberle and want him, but I don't know what I'd give up for him. Even if we didn't get him, we have Ho-Sang who could be just as good, and probably should be in the NHL but we have a roster logjam. So not trading for Eberle then eventually giving Ho-Sang a shot should be better for the Islanders, if only for the money/cap space.
Third, we didn't choose Ladd over Eberle. They play different positions.