well this i'm not sure about this.. but a saw a movie of the new skills here look at it. And especially look at the nukers.. notice that they are all light/ice nukers.
http://www.youtube.com/watch?v=0J7YEPSfsk4
That's the future.. ice/light nukers will rule with the new lvl 80+ skills and can even tank for a while against 4 pure str.. But as it is right now... the fire/light nukers are the strongers.
So well decide what you want. I'm just going fire/light because nobody really has the slithest idea when this upgrade is comming for iSRO.
and if you need a guide on pure int.. read this one.. this doesn't include the ice/light build though because the new skills ain't know yet.. well not to me.. I saw a picture of them. with chinese explanation but..uhm... well no idea what it said.
http://www.silkroadforums.com/viewtopic.php?t=39786