Hi Aram,
I managed to restore the link in your original post. Thanks for the reference and the feedback. We definately want to be as streamlined as possible with the Unity way of doing things. The thing is that proper Unity plugins are only supported in Unity Pro, and we want it to be possible to use our EyeX SDK for Unity in the free Unity version. So, we chose to not provide proper plugin, but packaging our SDK in a way that would be as recognizable as possible.
If Unity would open up for plugins to be used with the free version, we would definately go for creating a proper plugin. You are welcome to help us by letting Unity know if you think they should take away this restriction 🙂
In the meantime, we should try and clarify our documentation the best we can to clarify how our SDK differs from a Unity plugin.