if they do fix resists, some groups with 2 healers will be unkillable.. and fights will last as long as someone goes LD.
They should just stop low lvl items working in high lvl pvp.. example.. lvl 43 fear/stifle proc gear.
also... Adding randomness like lots of resists means less player influenced wins/losses.. you then may aswell have all the CC and other Proc gear working if you want randomness...