I would buy one if Nissan wasn't selling ones that are already 3 years old - and no certainty about the future of the vehicle in the market (parts etc).
The engine is beautiful and its a lot of car for the money.
Nissan is talking of rejigging the lineup with the QX80 arriving soon. If they price them realistically, commit to the vehicle long term and start bringing in fresh models (with all the updates from the last model refresh in 2014) I would seriously look at one to replace my Pajero. Who cares about no diesel, the Petrol engine is a gem and I don't tow a big van.
Their plan B could be as soon as they sell the last of the 2000+ models they imported back in 2012 they might just walk away from the Y62 in the Oz market - it will leave a lot of people with an orphan vehicle. There are no other vehicles that share parts with the Y62 in the Nissan catalogue (apart from the QX80 when they bring it here, but even that won't sell in big numbers).