Firstly a caveat...everything at EK changes almost daily so we have no idea for certain what will happen..
BBJ the 330s have already started to leave, you are from OZ, take a look at Virgin Oz's 330s, they were once ours. At current plan of two weeks ago, the last bus would be the 345s until late 2017 early 2018. At that time the 343s and 332s will be gone (plan only remember). With the 350 delay making their earliest arrival around 2019 there will be a gap, so if the plan stays then every bus driver will be 380 or 777 at that time. My guess is if you join now you will probably end up on the whale and others behind you at some stage will be locked into the death on the 345.
But that was two weeks ago.....and I am just a pilot so what do I know?
For the guy asking about noisy brakes, it's a shuttle valve, some are noisier than others but normal.