They'll rework all the jobs to fit new bars/skills/passives but hopefully they won't because basing PVP jobs off of their PVE counterparts leaves some jobs feeling bad to play/useless for whole expansions.

And anything else would be a bonus.

Maybe a new front-lines map and wolf mark set.

People just don't want to pvp in this game and SE can not afford to invest resources into gamemodes with low player retention.