For me, it's between Hastings and Bollinger for that last spot and if Hastings performs better than Bollinger in these last two ODIs I'm inclined to pick Hastings. Sure, Bollinger can get you the early wicket, but I don't think he takes that wicket on a consistent enough basis to warrant him being in the team as his bowling during the batting powerplay/last 10 overs isn't flash and he seems to become less economical the later in the ODI innings he has to bowl. Hastings gives Australia that extra option along with Lee and Watson when that batting powerplay and last 10 overs rolls around. Hastings' variations should also be useful in the subcontinental conditions. Also, if Australia are playing 3 pacemen and a spinner (probably Hauritz), we'd have really deep batting with Lee at #11. Even if we played 4 pacemen we'd still have Lee at #10 which is pretty handy. Of course, batting ability shouldn't come into consideration when picking #9 to #11 but it is an added bonus.