I have an idea that I would like to share with you all. I recently completed the warlock scenario, “Pursuing the Black Harvest” and obtained green fire for my warlock. On the last part of the scenario you fight Kanrethrad Ebonlocke. At the very beginning of the fight he summons a Pit lord demon which you must enslave immediately. This pit lord is the crux of the fight and you must learn how to manage his abilities as well as staying alive.
This Pit lord has very unique and very interesting abilities. He has his basic attack which is a Cleave. He has three special abilities called Demonic Siphon, Fel Flame Breath and Charge. Demonic siphon is just a healing spell that steals health from the pit lord to the caster. Fel flame breath is an aoe but in a cone attack that deals fire damage to anyone in its wake AND removes any magical debuff on them. The charge is simply just a stun like what warriors have.
So my idea is to make this guy part of the Warlock spell book for the next expansion. Blizzard has a history of adding at least one new spell to every class at or near the max level; demonic circle at level 80, demon soul at level 85 and demonic gateway at 87. What about a Pit lord at level 95? Imagine summoning a Pit lord for you own warlock and wreck destruction on your enemies? I would rather the Pit Lord be another Guardian demon like the Doomguard and Infernal because if they made the Pit lord like a permanent summon- able demon, they would probably nerf the guy or remove his signature abilities, resulting in a slightly larger voidwalker.
I say make this awesome demon a Guardian demon for two reasons: (1) this Demon with at least one of this signature abilities from the Kanrethrad fight would bring unique utility. Fel Flame Breath deals fire damage to friendly targets (it’s minimal damage) but removes magical debuffs off anyone in demonic fire. I say, use this as its signature ability, if that is too overpowered for a Guardian demon, then increase it’s cooldown, increase hp cost (like Unbound Will does when used) or increase the demon cooldown itself OR make it last half as long compared to the other Guardian demons. But I don’t think this would make the Pit lord overpowered, because Guardian demons cannot be used in Rated matches. Also, in a PVE setting, does having more Utility a bad thing? You sacrifice a dps cooldown (e.g. Doomguard/terrorguard) for providing your raid group with a demon that could eliminate bad debuffs on you. Very helpful indeed.