I would love a reroll system. Absolutely should not offer the same item twice in a reroll. All we get ever is dex gear. Never monk, never fending. Our ninja's offspec dragoon is better geared than our monk. Our tanks are geared entirely in poetics with zero FCoB loot while our bard and ninja are i125 now.
Same issue in SCoB. We cleared T6 almost since 2.3 hit and had to go back and farm T6 after the lockout was removed to get the monk helm. She couldn't even equip her HA claws until 2.4 due to missing the accuracy on her helm.
Love, love, love the idea of a reroll system.