Despite the bugs that there are now, some suggestions about their general attitude and ranger’s gaming experience are :
*Give them immunity or reduction to AoE dmg (if you think that its not fair for the other players do it for the Dungeon and the world bosses)
*Give them 20% or more perma speed in comparisson with the player(the pets cant close the gaps at PvP, players has speed buffs / dodges / abilities that teleports them miles away you have to find out a way for the pet to reach them and be effective)
*Make them stand behind, on the right or close to the ranger (you cant have a pet that stands 100 meters in front of you and pulls everything)
*Prioritize the F2 ability
*Make them cast while running