To clarify: in my question, I meant "non-destructive" in the sense that the "quantize" operations wouldn't modify the material being worked with in the editor, but would just "intelligently" adjust the boundaries of a selection or the point where it gets pasted. I didn't mean it in the sense of "no permanent changes to the underlying material". Probably not the best term but not sure how else to put it. "Smart" editing, I guess (though I'm tired of everything being "smart".) "Magnetic", maybe.