Ever since I had to transport my cat over a long distance with a reputable airline, I will never let my cat go in a cargo hold again. Despite paying a premium fee on top of my ticket my cat was dehydrated on arrival, and almost in shock. Despite having ample water as per the guidelines, the handlers obviously were careless and tipped over the water during loading. She looked so sickly after I picked her up she required a night recovering at a vet.
I don't trust JetSubpar with my own travel needs, so there is no way I would trust them with my cat when a much better "premium airline" almost killed her! Thankfully I'm not relocating in the near future, but I'd look at all the other options to avoid having my pet in the cargo hold. Those things can be death traps! I'm sure some airlines allow you to carry certain pets on board if they are of appropriate size. Not sure if you have to pay for an extra seat, but I would even do that if my cat had to travel again.
I'm not really into the whole Qantas vs Virgin thing, but I hope Virgin starts picking up some of the routes that only JetSubpar operates on so that at least customers have a choice of carrier. Come on cargo holds not being pressurised? Who authorised such nonsense? As others report not all cargo holds are heated or at least temperature controlled.