Why do you think the FAA would need/want to issue specific approval for this operation?
because it's an external load operation, required under Part 133.
as to "outside the box" and "innovative" thinking...blah blah blah. this may be exciting stuff to watch, but no way it's productive, nor economic. it's also an accident waiting to happen.
helos certainly have played important roles with other innovative ideas (longlines, crops, EMS, SAR, firefighting, etc), but those are far different than this. "because i can" shouldn't always be confused with innovation.
call me a Fool, but i take great pride in my 3500+ hours, accident free. and as a flight test pilot, i find it amusing to be called a Fool in an profession in which take great pride...improving safety.