I noticed those blown out polys at the end of the straps (it's not only the center strap). Setting an additional smoothing group will fix that.

As for the D-rings: they'll be posable. Not by a morph, no, by their own bones. All of them.
Morphs aren't any good for rotations, since they're linear by their very nature. So - bones.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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