The stat customization comes into play through gear and sockets. My 60 wizard is so far unlike any other I have encountered. You can stack dex for dodge, shields for block, vit for life, int for damage, etc. I have a 27% block shield, 20% dodge chance, and 5.5k dps, all with 43k life (with my friend's buff on me). Skill customization is pretty unique as well, since I also have a skill setup that I have yet to see another wizard use, picking skills and runes that I feel compliment my style of being a beefy kiter that still has good burst when someone else has all the aggro...