I agree with Insolence
To be good in melee ur build require a big amount of Hp ( Maybe Mana/ManaSheild of u), To do nice damage with skill, Lot of fpa or fps, Max Block, Descent FHR and Block Speed. Oh Yeah and descent DR
I really doubt a Melee sorc would be able to own any type of PvP Pally, Melee Druid, MA Asn, WW Barb... if considered melee...
Even with High Cost Pvp Gear like 160/60 armor, 1.08 bered Gaze
SS, Occy ring, Bugged String, Bugged Valor....

Good luck