Three things to predict:
1. When will he retire from test cricket? Will there be a batting rebirth, or will his form continue to wither away until the end?
2. How many test centuries will he end up with?
3. What will his final test average be? (See poll).
Obviously very hard to predict, but it's all in good fun...just give it your best shot and in a couple of years (if that) it might actually be suprising upon reflection.
For reference, his current average is 53.13