It's a really difficult one, and I'd imagine it rests more on the senior players - if they say they'll go, the rest of the team are likely to follow.
I also expect there to be a big backlash over the decision of Warne/Watson to stay in Jaipur during the IPL if the Australians don't go - which I think is unfair. That was a personal decision and even if Australia don't go to the CT, we don't know the views of the individual players. That said, it would be really interesting to hear Watson's views on the subject... but I doubt we will. I expect he'll keep his mouth shut.