Warlocks need to be tweaked and not nerfed. Viking funeral need to be changed to something like melting pot on a sunbreaker. It can still be deadly in crucible. It will give the other player a chance at survival. It will also make them more useful in pve activities. Stormcaller needs to have agility or duration of super reduced. Flame shield should also proc on kill or change hungering blade and force barrier to proceed on hit. Nightstalkers also need to have a cool down before you can toss grenade after you toss smoke and the shade step glitch need fixing. Also if the tether would work instantly and not delayed it would make it better in pvp. Sunbreakers could use a small buff to the hammers them selves ( better hit detection for lack of better term ). That's honestly how I would fix the current issues with subclasses in crucible.