In Australia, only accuracy is not important. Pace along with accuracy is important. All these guys are such good batsmen that they use the slow pace to adjust themselves quickly to any accuracy and then smash the ball easily.
To be honest, if we're only talking ODIs, you can forgo a fair bit of accuracy, but I wouldn't stop with just pace and accuracy. Even excellent bowlers such as Stuart Clark (albeit not terribly fast, but he reaches 140) have struggled with ODI situations. Being able to create variations is key. Something that separated McGrath from Pollock was his greater ability to come up with a deception. Similarly, you have bowlers such as Vaas and Bracken who have mastered both swing bowling and the use of cutters.
The charm of express pace bowlers is not only sheer pace, but they can create greater variance in pace, not to mention that when a good fast ball swings, it swings late. When the ball isn't doing much, players like Lee and Tait can still get their bouncer to nip up high and create a chance from nothing, of course, not that you need
that much pace to bowl a good bouncer.