The EH101 did not compete against the Sea Hawk in that competition; the Sea Hawk was disqualified becuase of the way the requirements were written. The only version of the Sea Hawk that was available at the time was the 60B (the 60F came into service in that time period). Those aircraft are not even being manufactured anymore; the 60R is a significantly more complex aircraft. It's not clear what mission system would be offered; certainly there are a few Merlin HM1s still in storage and the reasons why they are not considered for upgrade, considering the lack of Merlins in the fleet, are also not clear. We certainly don't want to be putting a "developmental" mission system in it.
Perhaps the intervening 35 years means we should revisit the CONOPs, requirements, and available aircraft?
As well, the AW101 will not solve, but rather exacerbate, the problem of helos for the AOPS, and the RCN's reticence to put helos on the CDC (if it materializes).
I'm not sympathetic to what you are saying; I was a young TACCO at CFB Shearwater (12 Wing didn't yet exist) when the EH101 was cancelled. I am very aware of the intent behind the additional crew station. My perferred course of action remains fix the Cyclone for just that reason. I'm entirely unconvinced that if we can't the AW101 is the "perfect" solution. The 60R is capable enough for where we now are, with a CONOPs rewrite, and comes with the benefit of robust transitional and in service support.