After reading through the changes for Melee it's quite clear this is just going to be a flat nerf to Warlocks specifically, due to the fact they hold very little in terms of melee buffs. For example here is what each class holds in terms of melee damage multipliers. Titans have 4 Aspects, 0 melees, 5 exotics. Totalling at 9 understandably the most since it's their theme Hunters have 2 aspects, 1 melees, 4 exotics. Totalling at 7 Warlocks have 0 aspects, 0 melees, 1 exotics... No need for math here, just one. Universally we have 2 fragments 1 exotic class item effect and two (Technically three) Weapon perks Honestly with this entire shift to melee damage why the hell didn't we see some exotic tuning towards more melee focused exotics. A perfect example would be Felwinter's helm dealing increased melee damage to any weakened targets, or simpler still Winters guile getting the worm gods and verity treatment of a decaying buff rather than instant loss.