Jack's did. So did Gwen. And how is dust a loophole? As bad as most resurrection stories are, they're made
somewhat plausible when there's still a body to work with. You can't resurrect what's been disintegrated.
I think bringing Ben back would be a bad idea. It would take a terribly ill-conceived (and most likely poorly written) story to make it happen, & I don't think any good would come of it.
Doubt me? Just remember:
And now that I think about it, Peter & MJ's marriage played heavily into the events of the Clone Saga. Can we be certain any of it ever happened at this point?
Damn. I think
I just gave them a loophole.