In order to raise the level of debate here somewhat, I say let the civvy helicopters fit whatever rescue kit they like and take on whatever roles they like. Only by learning the hard way will they ever learn to take advice.
You just can't save some people from themselves.
For goodness' sake, think outside of the box!
One AA pilot, right here in this debate (now flying a little yellow low-noise signature Hoover) used to be the RAF's SAR Sea King Examiner, although he doesn't blow his own trumpet...
To the folks who think that civvies can't do the job - Does that put it in perspective a little better?