I think if you use a small enough link size chain to span the width of the rim, and then use your larger link size chain to span the width of the tire...you will clear the hub with out too much difficulty. As for damage to the rim/tire, the rims are going to take damage no matter what type of driving you do. Snow driving is about the driving, not about looking good.
Ease of manufacture, I could go to Lowe's today and put a set of these things together. There is no difficulty in that. If you mass produce them, then you may be able to get the chain even cheaper (bulk rates and all).
As for the studs, the only real issue is tread strength. You need a tread that has enough rubber on it; so that when you poke all of the holes in it for putting screws through (or whatever you use) the tread doesn't tear under load (when you make that hole shot in the snow).