It seems like we demonology warlocks are getting ignored, and just getting nerfed each patch(PVE reasons obviously). We're the least represented class in Arena, even below tank specs.. it's a joke. I've played Demonology to 2.1-2.3k in the 3s bracket from each season in MoP and there's a lot to be fixed for Demonology, but nothing has been done yet.
There's so much that could be done with minor buffs
Demonic Circle disappears after you've put it down in Metamorphosis(FIX IT ASAP, IT'S ANNOYING).
Metamorphosis no longer has a cooldown.
Demon leap now removes Slow effects.
Carrion swarm now locks players out for 3seconds when interrupted.
Doom now deals 10% more damage. Doom now gives you X demonic fury for each hit. When doom is dispelled it gives you X amount of demonic fury.
When hand of gul'dan/chaos wave is applied on a target, your pet does 15% more damage. hand of gul'dan/chaos wave also reduces your cast time of shadow bolt by 30%.
Glyph of Felguard/wrathguard: legion strike/mortal strike and felstorm/wrathstorm now does 10% more damage.
Enslave demon, probably the least used spell of warlocks in PvP. (Demonology) now when demon is enslaved from the players demon by Demonology warlock, the demon hits their master for 15seconds, Deminishing return needed for this.(Probably would be "op", but just a suggestion)
Corruption now deals 15% more damage.
Those are my ideas that could be done to demonology warlocks, not all of them would i wish to be implemented, just some of them to make them viable as destruction and affliction, but i'm pretty sure this is gonna be ignored anyways since blizzard prioritise PvE before PvP.
Thxbyecya Sosseri out.