She’s going to be a fantastic replacement for Endeavour, the only issue I have is the medical facilities, she’s roughly the same size and capacity as the Norwegian Maud, yet Maud has a 48 bed hospital, operating theatre, isolation ward and ct scanner, disaster relief is one out her core functions so not fit her with a more comprehensive medical facility??
The first thing which comes to mind is that while HADR response/operations is one of the functions, the CONOPS involved are almost certainly different. The other is I do not really consider the two vessels to be 'similar' in size. The HMNZS Aotearoa is about 14 m shorter than the HNoMS Maud, and has a beam about 1.5 m less as well. Further, the Kiwi tanker will have the capacity to carry ~8,000 tonnes of diesel fuel, and about 1,500 tonnes of aviation fuel, while the Norwegian tanker will instead have a capacity for 7,000 tonnes of diesel fuel, and only 300 tonnes of aviation fuel. Yes the Norwegian vessel is designed to be able to accommodate up to 40 TEU including 200 tonnes of munitions, and/or a mix of vehicles and boats. By the same token though, the Kiwi tanker is to be able to transport up to a dozen containers, including 4 'dangerous goods' containers.
The HMNZS Aotearoa is also to have a displacement of 24,000 tonnes vs. ~26,000 for the HNoMS Maud, and a portion of the HMNZS Aotearoa's displacement is due to Polar Class 6 design requirements, since one of the other roles for the HMNZS Aotearoa is Southern Ocean and Antarctic operations in support of McMurdo Station and Scott Base.
As a side note, the HNoMS Maud does not have a 'permanent' 48-bed hospital. The Officers Lounge, non-crew lounge, and spare officer's cabins can be converted into low and high dependency wards (what I would probably call regular and either an ICU or Critical Care Unit) using kit stored in screened areas within the lounges. It might be possible to develop a similar sort of capacity to expand the medical care HMNZS Aotearoa can provide beyond the currently planned 2-berth ward and treatment room.