As the title says, please remember that there are skills that are perhaps not terribly useful in PvE content that are VERY useful in PvP. Things like bind/heavy/slow skills, BLM's Freeze, MNK's One Ilm Punch, etc. At the worst, if they must be removed from PvE, have them remade into PvP skills.

Please do NOT overlook PvP or job/skill balance with PvP in mind as well.