ATP brings up a good conversation. They have become the latest rage here in the states for Resumes (CV).....They dont make the Pilots any better but employers can say that his Pilots are all up to certain standards. The majority of the Helicopter world here in the states is quite happy getting paid with a Commercial License. Also some major operators are requiring a Helicopter Instrument ticket, when they do no more than VFR flight. Can you read between the lines on that.. You got it, they are flying VFR aircraft into sh1t conditions and are hoping an instrument pilot will go the extra mile to make money for the company. You read about it all the time ....crashed after continued flight into IMC........
AS to the ATP, I see no real purpose other than to be one up on someone over a beer.
If you think they are great tell your employer to raise your pay accordingly, Im sure he will give you the correct answer.