IT is too expensive with the present barrel price. The AW 189 and the H 175 will pick up what the H 225 left or the S 92 can not deliver. Operators and their clients also want to spread out the risk, not only having one model for most of the work.
Not sure when Airbus Helicopters will come up with a replacement for the 225, could be 2020-2022?
The thing is that as soon as the oilprice starts moving above 55-60$ then the fracking starts again where it is not doable today. That will keep the price down for the years to come.
IMHO the 101 is the best option (in artic areas) with a distance to the rigs of more than 1:40-2:00 hrs, but that is not going to happen unless the price goes above 150$/barrel.