Yep, specular and glossiness were somewhat unadjusted. New pics with altered settings and ToD..
Rope should be usable at least as a straight/rigid line, but i doubt it will be usable with actual physics. Idea how this will work is to set the "slider" to move between tagpoints at both ends of cable/rope, and use constraint for attaching cage to the slider, which allows cage to sway and detach if hit by explosive ammo.
Thanks for the comments