The graphite did nothing other than strengthen the bat. A pretty important feature when the bats are so highly-priced, don't you think?
I thought it was an incredibly backwards move for the ICC to even consider banning it and a part of me thinks that some bat manufacturers have been in the ears of some ICC members. I mean, there's no way in hell I'm spending AUD$600 on a bat. But if I thought it was actually going to last, I'd definitely consider it.
Anyway, there have been plenty of innovations in bat technology over the years and a few non-willow materials added, which have all resulted in more powerful bats; graphite handles, grooves through the centre of the bats to give more power, many and varied types of scoops taken out of the bat, willow treatments, etc. Yet we have an innovation which does nothing to improve power and in fact SAVES people money and it gets banned. Why allow the rest, which give batsmen a power advantage, yet ban one which does nothing other than strengthen the bat against breaking?