Hi,
Again, really cool progress! 
I saw your feature request on GitHub about the hook modifier. I wanted to ask here so we don’t clutter the issue itself. Could you please elaborate a situation in game where you would want to use the hook modifier? Perhaps a rigid body constraint is what you are actually looking for…
The hook modifier in Armory is specific for soft body physics. That is because it will be used to “anchor” soft bodies vertices to certain mesh or objects. So it does not work with any other objects. More over, even if hook modifier were to work with non-soft body objects, it would be as good as a simple parent-child relation. There will be no dynamics involved between the objects connected via the hook.